www.htmlyse.com - Home

Test DNS, SSL/TLS, HTTP and HTML

Test results for w3schools.com

Scanned on: Sat Sep 22 09:06:38 2018 GMT. Tested in 437 seconds

DNS Report

DNSSEC                 not offered
Zone transfer (AXFR)   not allowed (OK)
CAA Record             not offered
SPF Record             offered (OK)
DMARC Record           not offered
MTA-STS                not offered
TLSRPT Record          not offered

Raw DNS Records

Name TTL Type Data
w3schools.com 3600 SOA ns1.maximumasp.com admin @ maximumasp.com 2005122569 7200 600 1209600 3600
w3schools.com 3600 NS ns1.maximumasp.com, IPv4: 216.128.31.5
w3schools.com 3600 NS ns2.maximumasp.com, IPv4: 216.128.31.6
w3schools.com 3600 A 66.29.212.110
w3schools.com 3600 MX 10 aspmx.l.google.com
w3schools.com 3600 MX 20 alt2.aspmx.l.google.com
w3schools.com 3600 MX 20 alt1.aspmx.l.google.com
w3schools.com 3600 MX 30 aspmx5.googlemail.com
w3schools.com 3600 MX 30 aspmx2.googlemail.com
w3schools.com 3600 MX 30 aspmx3.googlemail.com
w3schools.com 3600 MX 30 aspmx4.googlemail.com
w3schools.com 3600 TXT v=spf1 include:_spf.google.com ip4:148.122.215.227 ~all
www.w3schools.com 3600 CNAME cs837.wac.edgecastcdn.net
cs837.wac.edgecastcdn.net 3600 A 192.229.133.221

SSL/TLS Report

 A record via            supplied IP "66.29.212.110"
 rDNS (66.29.212.110):   mail.medlinkrecruiting.com.
 Service detected:       HTTP


 SSL/TLS protocols 
 SSLv2      offered (NOT ok), also VULNERABLE to DROWN attack -- 2 ciphers
 SSLv3      offered (NOT ok)
 TLS 1      offered
 TLS 1.1    not offered -- downgraded
 TLS 1.2    not offered -- strange, server closed TCP connection 
 TLS 1.3    not offered -- downgraded
 NPN/SPDY   not offered
 ALPN/HTTP2 not offered

 SSL/TLS server implementation bugs 

 No bugs found.

 Cipher categories 

 NULL ciphers (no encryption)                  not offered (OK) -- NULL:eNULL
 Anonymous NULL Ciphers (no authentication)    not offered (OK) -- aNULL:ADH
 Export ciphers (w/o ADH+NULL)                 not offered (OK) -- EXPORT:!ADH:!NULL
 LOW: 64 Bit + DES encryption (w/o export)     not offered (OK) -- LOW:DES:!ADH:!EXP:!NULL
 Weak 128 Bit ciphers (SEED, IDEA, RC[2,4])    offered (NOT ok) -- MEDIUM:!aNULL:!AES:!CAMELLIA:!ARIA:!CHACHA20:!3DES
 Triple DES Ciphers (Medium)                   offered -- 3DES:!aNULL:!ADH
 High encryption (AES+Camellia, no AEAD)       offered (OK) -- HIGH:!NULL:!aNULL:!DES:!3DES:!AESGCM:!CHACHA20:!AESGCM:!CamelliaGCM:!AESCCM8:!AESCCM
 Strong encryption (AEAD ciphers)              not offered -- AESGCM:CHACHA20:AESGCM:CamelliaGCM:AESCCM8:AESCCM


 Robust (perfect) forward secrecy, (P)FS -- omitting Null Authentication/Encryption, 3DES, RC4 

 PFS is offered (OK)          ECDHE-RSA-AES256-SHA ECDHE-RSA-AES128-SHA 
 Elliptic curves offered:     prime256v1 secp384r1 


 Server preferences 

 Has server cipher order?     yes (OK)
 Negotiated protocol          TLSv1
 Negotiated cipher            AES128-SHA
 Cipher order
    SSLv3:     RC4-SHA DES-CBC3-SHA RC4-MD5 
    TLSv1:     AES128-SHA AES256-SHA RC4-SHA DES-CBC3-SHA ECDHE-RSA-AES128-SHA 
               ECDHE-RSA-AES256-SHA RC4-MD5 


 Server defaults (Server Hello) 

 TLS extensions (standard)    "status request/#5" "renegotiation info/#65281"
                              "extended master secret/#23"
 Session Ticket RFC 5077 hint (no lifetime advertised)
 SSL Session ID support       yes
 Session Resumption           Tickets: yes, ID: yes
 TLS clock skew               0 sec from localtime
 Signature Algorithm          SHA256 with RSA
 Server key size              RSA 2048 bits
 Server key usage             Digital Signature, Key Encipherment
 Server extended key usage    TLS Web Server Authentication, TLS Web Client Authentication
 Serial / Fingerprints        600D440704686D08FBFE025659D0FDCA / SHA1 518256A27102DC25E3328285267AC9A239A9984D
                              SHA256 1B8B5B25891543517805B44092B72229D74B8470EA6DB3B99123B8A68ACD929F
 Common Name (CN)             w3schools.com
 subjectAltName (SAN)         w3schools.com www.w3schools.com 
 Issuer                       Network Solutions DV Server CA 2 (Network Solutions L.L.C. from US)
 Trust (hostname)             Ok via SAN and CN (same w/o SNI)
 Chain of trust               Ok   
 EV cert (experimental)       no 
 Certificate Validity (UTC)   expires < 30 days (19) (2017-10-12 02:00 --> 2018-10-12 01:59)
 # of certificates provided   3
 Certificate Revocation List  http://crl.netsolssl.com/NetworkSolutionsDVServerCA2.crl
 OCSP URI                     http://ocsp.netsolssl.com
 OCSP stapling                offered
 OCSP must staple extension   --
 DNS CAA RR (experimental)    not offered
 Certificate Transparency     --


 HTTP header response @ "/" 

 HTTP Status Code             301 Moved Permanently, redirecting to "https://www.w3schools.com/"
 HTTP clock skew              0 sec from localtime
 Strict Transport Security    not offered
 Public Key Pinning           --
 Server banner                Microsoft-IIS/7.5
 Application banner           X-Powered-By: ASP.NET
 Cookie(s)                    (none issued at "/") -- maybe better try target URL of 30x
 Security headers             X-Frame-Options SAMEORIGIN
 Reverse Proxy banner         --


 SSL/TLS vulnerabilities 

 Heartbleed (CVE-2014-0160)                not vulnerable (OK), no heartbeat extension
 CCS (CVE-2014-0224)                       not vulnerable (OK)
 Ticketbleed (CVE-2016-9244), experiment.  not vulnerable (OK), no session ticket extension
 ROBOT                                     not vulnerable (OK)
 Secure Renegotiation (CVE-2009-3555)      not vulnerable (OK)
 Secure Client-Initiated Renegotiation     not vulnerable (OK)
 CRIME, TLS (CVE-2012-4929)                not vulnerable (OK)
 BREACH (CVE-2013-3587)                    no HTTP compression (OK)  - only supplied "/" tested
 POODLE, SSL (CVE-2014-3566)               VULNERABLE (NOT ok), uses SSLv3+CBC (check TLS_FALLBACK_SCSV mitigation below)
 TLS_FALLBACK_SCSV (RFC 7507)              Downgrade attack prevention NOT supported and vulnerable to POODLE SSL
 SWEET32 (CVE-2016-2183, CVE-2016-6329)    VULNERABLE, uses 64 bit block ciphers
 FREAK (CVE-2015-0204)                     not vulnerable (OK)
 DROWN (CVE-2016-0800, CVE-2016-0703)      VULNERABLE (NOT ok), SSLv2 offered with 2 ciphers
                                           Make sure you don't use this certificate elsewhere, see:
                                           https://censys.io/ipv4?q=1B8B5B25891543517805B44092B72229D74B8470EA6DB3B99123B8A68ACD929F
 LOGJAM (CVE-2015-4000), experimental      not vulnerable (OK): no DH EXPORT ciphers, no DH key detected
 BEAST (CVE-2011-3389)                     SSL3: DES-CBC3-SHA 
                                           TLS1: AES128-SHA AES256-SHA
                                                 DES-CBC3-SHA
                                                 ECDHE-RSA-AES128-SHA
                                                 ECDHE-RSA-AES256-SHA 
                                           VULNERABLE -- and no higher protocols as mitigation supported
 LUCKY13 (CVE-2013-0169), experimental     potentially VULNERABLE, uses cipher block chaining (CBC) ciphers with TLS. Check patches
 RC4 (CVE-2013-2566, CVE-2015-2808)        VULNERABLE (NOT ok): RC4-SHA RC4-MD5
                                                                RC4-MD5 


 Tested 364 ciphers, ordered by encryption strength 

Hexcode  Cipher Suite Name (OpenSSL)       KeyExch.   Encryption  Bits     Cipher Suite Name (RFC)
-----------------------------------------------------------------------------------------------------------------------------
 xc014   ECDHE-RSA-AES256-SHA              ECDH 256   AES         256      TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA                 
 x35     AES256-SHA                        RSA        AES         256      TLS_RSA_WITH_AES_256_CBC_SHA                       
 xc013   ECDHE-RSA-AES128-SHA              ECDH 256   AES         128      TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA                 
 x2f     AES128-SHA                        RSA        AES         128      TLS_RSA_WITH_AES_128_CBC_SHA                       
 x05     RC4-SHA                           RSA        RC4         128      TLS_RSA_WITH_RC4_128_SHA                           
 x04     RC4-MD5                           RSA        RC4         128      TLS_RSA_WITH_RC4_128_MD5                           
 x010080 RC4-MD5                           RSA        RC4         128      SSL_CK_RC4_128_WITH_MD5                            
 x0a     DES-CBC3-SHA                      RSA        3DES        168      TLS_RSA_WITH_3DES_EDE_CBC_SHA                      
 x0700c0 DES-CBC3-MD5                      RSA        3DES        168      SSL_CK_DES_192_EDE3_CBC_WITH_MD5                   


 Ciphers per protocol, ordered by encryption strength 

Hexcode  Cipher Suite Name (OpenSSL)       KeyExch.   Encryption  Bits     Cipher Suite Name (RFC)
-----------------------------------------------------------------------------------------------------------------------------
TLS 1.3  
TLS 1.2  
TLS 1.1  
TLS 1  
 xc014   ECDHE-RSA-AES256-SHA              ECDH 256   AES         256      TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA                 
 x35     AES256-SHA                        RSA        AES         256      TLS_RSA_WITH_AES_256_CBC_SHA                       
 xc013   ECDHE-RSA-AES128-SHA              ECDH 256   AES         128      TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA                 
 x2f     AES128-SHA                        RSA        AES         128      TLS_RSA_WITH_AES_128_CBC_SHA                       
 x05     RC4-SHA                           RSA        RC4         128      TLS_RSA_WITH_RC4_128_SHA                           
 x04     RC4-MD5                           RSA        RC4         128      TLS_RSA_WITH_RC4_128_MD5                           
 x0a     DES-CBC3-SHA                      RSA        3DES        168      TLS_RSA_WITH_3DES_EDE_CBC_SHA                      
SSLv3  
 x05     RC4-SHA                           RSA        RC4         128      TLS_RSA_WITH_RC4_128_SHA                           
 x04     RC4-MD5                           RSA        RC4         128      TLS_RSA_WITH_RC4_128_MD5                           
 x0a     DES-CBC3-SHA                      RSA        3DES        168      TLS_RSA_WITH_3DES_EDE_CBC_SHA                      
SSLv2  
 x010080 RC4-MD5                           RSA        RC4         128      SSL_CK_RC4_128_WITH_MD5                            
 x0700c0 DES-CBC3-MD5                      RSA        3DES        168      SSL_CK_DES_192_EDE3_CBC_WITH_MD5                   

 Client simulations 

 Android 2.3.7                TLSv1.0 AES128-SHA
 Android 4.0.4                TLSv1.0 AES128-SHA
 Android 4.1.1                TLSv1.0 AES128-SHA
 Android 4.2.2                TLSv1.0 AES128-SHA
 Android 4.3                  TLSv1.0 AES128-SHA
 Android 4.4.2                TLSv1.0 AES128-SHA
 Android 5.0.0                TLSv1.0 AES128-SHA
 Android 6.0                  TLSv1.0 AES128-SHA
 Android 7.0                  TLSv1.0 AES128-SHA
 Chrome 27 Win 7              TLSv1.0 AES128-SHA
 Chrome 28 Win 7              TLSv1.0 AES128-SHA
 Chrome 29 Win 7              TLSv1.0 AES128-SHA
 Chrome 30 Win 7              TLSv1.0 AES128-SHA
 Chrome 31 Win 7              TLSv1.0 AES128-SHA
 Chrome 32 Win 7              TLSv1.0 AES128-SHA
 Chrome 33 Win 7              TLSv1.0 AES128-SHA
 Chrome 34 OS X               TLSv1.0 AES128-SHA
 Chrome 35 Win 7              TLSv1.0 AES128-SHA
 Chrome 36 Win 7              TLSv1.0 AES128-SHA
 Chrome 37 OS X               TLSv1.0 AES128-SHA
 Chrome 39 OS X               TLSv1.0 AES128-SHA
 Chrome 40 OS X               TLSv1.0 AES128-SHA
 Chrome 42 OS X               TLSv1.0 AES128-SHA
 Chrome 43 OS X               TLSv1.0 AES128-SHA
 Chrome 45 OS X               TLSv1.0 AES128-SHA
 Chrome 47 OS X               TLSv1.0 AES128-SHA
 Chrome 48 OS X               TLSv1.0 AES128-SHA
 Chrome 49 Win 7              TLSv1.0 AES128-SHA
 Chrome 49 XP SP3             TLSv1.0 AES128-SHA
 Chrome 50 Win 7              TLSv1.0 AES128-SHA
 Chrome 51 Win 7              TLSv1.0 AES128-SHA
 Chrome 57 Win 7              TLSv1.0 AES128-SHA
 Chrome 65 Win 7              TLSv1.0 AES128-SHA
 Firefox 10.0.12 ESR Win 7    TLSv1.0 AES128-SHA
 Firefox 17.0.7 ESR Win 7     TLSv1.0 AES128-SHA
 Firefox 21 Fedora 19         TLSv1.0 AES128-SHA
 Firefox 21 Win 7             TLSv1.0 AES128-SHA
 Firefox 22 Win 7             TLSv1.0 AES128-SHA
 Firefox 24.2.0 ESR Win 7     TLSv1.0 AES128-SHA
 Firefox 24 Win 7             TLSv1.0 AES128-SHA
 Firefox 26 Win 8             TLSv1.0 AES128-SHA
 Firefox 27 Win 8             TLSv1.0 AES128-SHA
 Firefox 29 OS X              TLSv1.0 AES128-SHA
 Firefox 30 OS X              TLSv1.0 AES128-SHA
 Firefox 31.3.0 ESR Win 7     TLSv1.0 AES128-SHA
 Firefox 31 OS X              TLSv1.0 AES128-SHA
 Firefox 32 OS X              TLSv1.0 AES128-SHA
 Firefox 34 OS X              TLSv1.0 AES128-SHA
 Firefox 35 OS X              TLSv1.0 AES128-SHA
 Firefox 37 OS X              TLSv1.0 AES128-SHA
 Firefox 39 OS X              TLSv1.0 AES128-SHA
 Firefox 41 OS X              TLSv1.0 AES128-SHA
 Firefox 42 OS X              TLSv1.0 AES128-SHA
 Firefox 44 OS X              TLSv1.0 AES128-SHA
 Firefox 45 Win 7             TLSv1.0 AES128-SHA
 Firefox 46 Win 7             TLSv1.0 AES128-SHA
 Firefox 47 Win 7             TLSv1.0 AES128-SHA
 Firefox 49 Win 7             TLSv1.0 AES128-SHA
 Firefox 49 XP SP3            TLSv1.0 AES128-SHA
 Firefox 53 Win 7             TLSv1.0 AES128-SHA
 Firefox 59 Win 7             TLSv1.0 AES128-SHA
 IE 6 XP                      SSLv3   RC4-SHA
 IE 7 Vista                   TLSv1.0 AES128-SHA
 IE 8-10 Win 7                TLSv1.0 AES128-SHA
 IE 8 Win 7                   TLSv1.0 AES128-SHA
 IE 8 XP                      TLSv1.0 RC4-SHA
 IE 9 Win 7                   TLSv1.0 AES128-SHA
 IE 10 Win Phone 8.0          TLSv1.0 AES128-SHA
 IE 11 Win 7                  TLSv1.0 AES128-SHA
 IE 11 Win 8.1                TLSv1.0 AES128-SHA
 IE 11 Win Phone 8.1          TLSv1.0 AES128-SHA
 IE 11 Win Phone 8.1 Update   TLSv1.0 AES128-SHA
 IE 11 Win 10                 TLSv1.0 AES128-SHA
 IE 11 Win 10 Preview         TLSv1.0 AES128-SHA
 Edge 12 Win 10               TLSv1.0 AES128-SHA
 Edge 13 Win 10               TLSv1.0 AES128-SHA
 Edge 13 Win Phone 10         TLSv1.0 AES128-SHA
 Edge 15 Win 10               TLSv1.0 AES128-SHA
 Opera 12.15 Win 7            TLSv1.0 AES128-SHA
 Opera 15 Win 7               TLSv1.0 AES128-SHA
 Opera 16 Win 7               TLSv1.0 AES128-SHA
 Opera 17 Win 7               TLSv1.0 AES128-SHA
 Safari 5.1.9 OS X 10.6.8     TLSv1.0 AES128-SHA
 Safari 5 iOS 5.1.1           TLSv1.0 AES128-SHA
 Safari 6.0.4 OS X 10.8.4     TLSv1.0 AES128-SHA
 Safari 6 iOS 6.0.1           TLSv1.0 AES128-SHA
 Safari 7 iOS 7.1             TLSv1.0 AES128-SHA
 Safari 7 OS X 10.9           TLSv1.0 AES128-SHA
 Safari 8 iOS 8.0 Beta        TLSv1.0 AES128-SHA
 Safari 8 iOS 8.4             TLSv1.0 AES128-SHA
 Safari 8 OS X 10.10          TLSv1.0 AES128-SHA
 Safari 9 iOS 9               TLSv1.0 AES128-SHA
 Safari 9 OS X 10.11          TLSv1.0 AES128-SHA
 Safari 10 iOS 10             TLSv1.0 AES128-SHA
 Safari 10 OS X 10.12         TLSv1.0 AES128-SHA
 Apple ATS 9 iOS 9            No connection
 Tor 17.0.9 Win 7             TLSv1.0 AES128-SHA
 Java 6u45                    TLSv1.0 AES128-SHA
 Java 7u25                    TLSv1.0 AES128-SHA
 Java 8b132                   TLSv1.0 AES128-SHA
 Java 8u111                   TLSv1.0 AES128-SHA
 Java 8u161                   TLSv1.0 AES128-SHA
 Java 8u31                    TLSv1.0 AES128-SHA
 Java 9.0.4                   TLSv1.0 AES128-SHA
 OpenSSL 0.9.8y               TLSv1.0 AES128-SHA
 OpenSSL 1.0.1h               TLSv1.0 AES128-SHA
 OpenSSL 1.0.1l               TLSv1.0 AES128-SHA
 OpenSSL 1.0.2e               TLSv1.0 AES128-SHA
 Baidu Jan 2015               TLSv1.0 AES128-SHA
 BingBot Dec 2013             TLSv1.0 AES128-SHA
 BingPreview Dec 2013         TLSv1.0 AES128-SHA
 BingPreview Jan 2015         TLSv1.0 AES128-SHA
 BingPreview Jun 2014         TLSv1.0 AES128-SHA
 Yahoo Slurp Jan 2015         TLSv1.0 AES128-SHA
 Googlebot Feb 2015           TLSv1.0 AES128-SHA
 Googlebot Feb 2018           TLSv1.0 AES128-SHA
 Googlebot Jun 2014           TLSv1.0 AES128-SHA
 Googlebot Oct 2013           TLSv1.0 AES128-SHA
 Yahoo Slurp Jun 2014         TLSv1.0 AES128-SHA
 Yahoo Slurp Oct 2013         TLSv1.0 AES128-SHA
 YandexBot 3.0                SSLv3   RC4-SHA
 YandexBot Jan 2015           TLSv1.0 AES128-SHA
 YandexBot May 2014           TLSv1.0 AES128-SHA
 YandexBot Sep 2014           TLSv1.0 AES128-SHA


Security HTTP Headers

HTTP Strict Transport Security (HSTS)   not offered (NOT ok)
Content Security Policy (CSP)           not offered (NOT ok)
X-Frame-Options                         offered (OK)
X-XSS-Protection                        not offered
X-Content-Type-Options                  not offered
Expect-CT                               not offered
Referrer Policy                         not offered
Feature Policy                          not offered
Web Server Version Disclosure           offered (NOT ok)
Web Application Disclosure              offered (NOT ok)
HTTP Public Key Pins (HPKP)             not offered, deprecated

Connection Performance
Keep Alive Connection                   not offered
Content Encoding (Compression)          offered (Gzip) OK, for static pages or if no secrets in the page

Raw HTTP Headers

HTTP/1.1 200 OK
Cache-Control Public,public
Content-Encoding gzip
Content-Length 7907
Content-Type text/html
Date Sat, 22 Sep 2018 08:59:29 GMT
Expires Sat, 22 Sep 2018 12:59:30 GMT
Last-Modified Sat, 22 Sep 2018 06:15:06 GMT
Server ECS (fcn/41D7)
Vary Accept-Encoding
X-Cache HIT
X-Frame-Options SAMEORIGIN
X-Powered-By ASP.NET

Cleaned HTML

<!DOCTYPE html>
<html lang="en-US">
<head>
<title>W3Schools Online Web Tutorials</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="Keywords" content="HTML,CSS,JavaScript,DOM,jQuery,PHP,SQL,XML,Python,Bootstrap,Web,W3CSS,W3C,tutorials,programming,development,training,learning,quiz,primer,lessons,reference,examples,source code,colors,demos,tips,w3c" />
<link rel="icon" href="/favicon.ico" type="image/x-icon" />
<link rel="stylesheet" href="w3css/4/w3.css" />
<script>
<![CDATA[
(function() {
var cx = '012971019331610648934:m2tou3_miwy';
var gcse = document.createElement('script'); gcse.type = 'text/javascript'; gcse.async = true;
gcse.src = 'https://www.google.com/cse/cse.js?cx=' + cx;
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(gcse, s);
})();
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-3855518-1', 'auto');
ga('require', 'displayfeatures');
ga('send', 'pageview');
]]>
</script>
<style>
<![CDATA[
/* W3Schools Font Logo */
.w3schools-logo {
font-family:fontawesome;
text-decoration:none;
line-height: 1;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
font-size:37px;
letter-spacing:3px;
color:#555555;
display:block;
position:relative;
}
.w3schools-logo .dotcom {color:#4CAF50;}
@font-face {
font-family:'fontawesome';
src:url('../lib/fonts/fontawesome.eot?14663396#iefix') format('embedded-opentype'),
url('../lib/fonts/fontawesome.woff?14663396') format('woff'),
url('../lib/fonts/fontawesome.ttf?14663396') format('truetype'),
url('../lib/fonts/fontawesome.svg?14663396#fontawesome') format('svg');
font-style:normal;
}
.fa {
display:inline-block;
font:normal normal normal 14px/1 FontAwesome;
font-size:20px;
text-rendering:auto;
-webkit-font-smoothing:antialiased;
-moz-osx-font-smoothing:grayscale;
transform:translate(0,0);
}
.fa-home:before {content:'\e800';}
.fa-menu:before {content: '\f0c9';}
.fa-globe:before {content:'\e801';}
.fa-search:before {content:'\e802'; }
.fa-thumbs-o-up:before {content:'\e803';}
.fa-left-open:before {content:'\e804';}
.fa-right-open:before {content:'\e805';}
.fa-caret-down:before {content:'\e809';}
.fa-caret-up:before {content:'\e80a';}
/* Google */
#nav_translate, #nav_search {display:none;}
#nav_translate a {display:inline;}
#googleSearch {color:#000000;}
.searchdiv {
max-width:400px;
margin:auto;
text-align:left;
font-size:16px;
}
div.cse .gsc-control-cse, div.gsc-control-cse {
background-color:transparent;
border:none;
padding:0px;
margin:0px;
}
td.gsc-search-button input.gsc-search-button {background-color:#555555;border-color:#555555;}
input.gsc-input, .gsc-input-box, .gsc-input-box-hover, .gsc-input-box-focus, .gsc-search-button {
box-sizing:content-box;
line-height:normal;
}
.gsc-tabsArea div {overflow:visible;}
.gsst_a .gscb_a {margin-top:3px;}
/* Customize W3.CSS */
#nav_tutorials,#nav_references,#nav_examples {
display:none;
padding-bottom:40px;
position:absolute;
width:100%;
z-index:99 !important;
}
.w3-col .w3-button {
margin:5px 5px 5px 0;
font-size:16px;
}
.w3-col.l4 .w3-card-2 {
padding:15px 10px;
height:260px;
}
.w3-theme {color:#fff !important;background-color:#4CAF50 !important;}
.w3-main {margin-left:230px;}
.w3-sidebar {
z-index:3;
width:230px;
overflow:hidden !important;
position:absolute !important;
margin-bottom:-155px;
}
.w3-sidebar .w3-bar-block .w3-bar-item{
padding:0 16px;
font-size:16px;
}
.w3-bar {
position:relative;
z-index:4;
font-size:17px;
}
.w3-wide {
font-family:"Segoe UI",Arial,sans-serif;
}
h1 {
font-size:80px;
color:#555555;
margin:2px 0 -20px 0 !important;
}
.certoverlay {
position:absolute;
top:0;
background-color:rgba(0, 0, 0, 0.5);
width:100%;
text-align:center;
padding:15px
}
.certoverlay h2 {
margin:10px 0 0 0;
font-size:36px;
}
.certoverlay h3 {
margin:0 0 10px 0;
}

@media screen and (min-width:769px){.w3-sidebar.w3-collapse{display:block !important;}}
@media screen and (min-width:769px){#myAccordion,.hidesm{display:none !important;}}
@media screen and (min-width:769px){.w3-main{margin-left:230px !important;}.w3-bar-block .w3-button{padding:0;}}
@media screen and (max-width:768px){.w3-sidebar.w3-collapse,.barex,.navex{display:none !important;}.w3-bar-block .w3-bar-item{text-align:center !important;padding:2px 0;}h1,.w3-jumbo{font-size:60px !important;}}
@media screen and (max-width:545px){.certoverlay{padding:10px;height:100%;}.certoverlay h3{font-size:15px;}}
@media screen and (max-width:380px){.getcert{position:absolute;text-align:center;left:50%;bottom:50%;font-size:13px;}}
@media only screen and (max-device-width: 1366px){.w3-hide-device{display:none;}}
]]>
</style>

<style type="text/css">
/*<![CDATA[*/
body.c28 {position:relative;min-height:100%;}
a.c27 {text-decoration:none}
a.c26 {font-size:16px;margin-bottom:16px;}
a.c25 {font-size:16px;margin-bottom:16px}
a.c24 {font-size:16px;margin-top:-9px;margin-left:12px}
a.c23 {font-size:16px;margin-top:-9px}
a.c22 {font-size:17px}
img.c21 {max-width:100%;margin:auto;display:block}
div.c20 {padding-bottom:36px!important}
div.c19 {margin:32px -16px}
iframe.c18 {width:100%;border:5px solid #ddd;height:300px}
img.c17 {width:100%;margin:16px 0 20px 0}
div.c16 {padding-bottom:68px!important}
img.c15 {width:150px;height:128px;margin-top:16px;}
div.c14 {padding:3%;}
div.c13 {padding-bottom:30px}
div.c12 {padding-top:40px;padding:3%;}
div.c11 {padding: 3%}
div.c10 {padding:3%}
div.c9 {display:none;cursor:default}
i.c8 {display:none}
a.c7 {font-style: italic}
div.c6 {display:none;position:absolute;z-index:5;right:120px;height:57px;background-color:#4CAF50;text-align:right;padding-top:15px;}
div.c5 {display:none;position:absolute;z-index:6;right:60px;height:57px;padding-top:12px;padding-right:20px;background-color:#4CAF50;}
div.c4 {margin:14px 0 -5px 0}
div.c3 {margin-top:5px;}
div.c2 {position:relative;top:5px;}
div.c1 {margin:4px 0 6px 0}
/*]]>*/
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<h3>HTML Example:</h3>
<div class="w3-code htmlHigh notranslate w3-border-green">&lt;!DOCTYPE html&gt;<br />
&lt;html&gt;<br />
&lt;title&gt;HTML Tutorial&lt;/title&gt;<br />
&lt;body&gt;<br />
<br />
&lt;h1&gt;This is a heading&lt;/h1&gt;<br />
&lt;p&gt;This is a paragraph.&lt;/p&gt;<br />
<br />
&lt;/body&gt;<br />
&lt;/html&gt;</div>
<a href="/html/tryit.asp?filename=tryhtml_default" target="_blank" class="w3-button w3-theme w3-hover-green w3-hover-shadow">Try it Yourself »</a></div>
</div>
<div class="w3-row w3-light-grey w3-hide-medium w3-hide-small">
<div class="w3-col l6 c12">
<h3>CSS Example:</h3>
<div class="w3-code cssHigh notranslate w3-card-2 w3-border-green">body {<br />
&nbsp;&nbsp;&nbsp; background-color: lightblue;<br />
}<br />
h1 {<br />
&nbsp;&nbsp;&nbsp; color: white;<br />
&nbsp;&nbsp;&nbsp; text-align: center;<br />
}<br />
p {<br />
&nbsp;&nbsp;&nbsp; font-family: verdana;<br />
&nbsp;&nbsp;&nbsp; font-size: 20px;<br />
}</div>
<a href="/css/tryit.asp?filename=trycss_default" target="_blank" class="w3-button w3-theme w3-hover-green w3-hover-shadow">Try it Yourself »</a></div>
<div class="w3-col l6 w3-center c10">
<h1>CSS</h1>
<p class="w3-xlarge">The language for styling web pages</p>
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<div class="w3-row w3-light-grey w3-hide-large c13">
<div class="w3-col l6 w3-center c10">
<h1>CSS</h1>
<p class="w3-xlarge">The language for styling web pages</p>
<a href="/css/default.asp" class="w3-button w3-dark-grey">LEARN CSS</a> <a href="/cssref/default.asp" class="w3-button w3-dark-grey">CSS REFERENCE</a></div>
<div class="w3-col l6 w3-hide-small c12">
<h3>CSS Example:</h3>
<div class="w3-code cssHigh notranslate w3-card-2 w3-border-green">body {<br />
&nbsp;&nbsp;&nbsp; background-color: lightblue;<br />
}<br />
h1 {<br />
&nbsp;&nbsp;&nbsp; color: white;<br />
&nbsp;&nbsp;&nbsp; text-align: center;<br />
}<br />
p {<br />
&nbsp;&nbsp;&nbsp; font-family: verdana;<br />
&nbsp;&nbsp;&nbsp; font-size: 20px;<br />
}</div>
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<div class="w3-row">
<div class="w3-col l6 w3-center c10">
<h1 class="w3-jumbo">JavaScript</h1>
<p class="w3-xlarge w3-text-dark-grey">The language for programming web pages</p>
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<h3>JavaScript Example:</h3>
<div class="w3-code notranslate w3-card-2 w3-border-green">
<div class="htmlHigh">&lt;script&gt;</div>
<div class="jsHigh">function myFunction() {<br />
&nbsp;&nbsp;&nbsp; var x = document.getElementById("demo");<br />
&nbsp;&nbsp;&nbsp; x.style.fontSize = "25px";<br />
&nbsp;&nbsp;&nbsp; x.style.color = "red";<br />
}<br /></div>
<div class="htmlHigh">&lt;/script&gt;<br />
<br />
&lt;button onclick="myFunction()"&gt;Click Me!&lt;/button&gt;</div>
</div>
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</div>
<div class="w3-row w3-light-grey w3-padding-16">
<div class="w3-col l4 w3-center w3-card-2 w3-white c14">
<h2 class="w3-xxlarge">SQL</h2>
<h4 class="w3-text-dark-grey">A language for accessing databases</h4>
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<h2 class="w3-xxlarge">PHP</h2>
<h4 class="w3-text-dark-grey">A web server programming language</h4>
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<h2 class="w3-xxlarge">jQuery</h2>
<h4 class="w3-text-dark-grey">A JavaScript library for developing web pages</h4>
<a href="/jquery/default.asp" class="w3-button w3-dark-grey">LEARN JQUERY</a></div>
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<div class="w3-row">
<div class="w3-col l4 w3-center c14">
<h2 class="w3-xxlarge">W3.CSS</h2>
<h4 class="w3-text-dark-grey">A modern CSS framework for faster and better responsive web pages</h4>
<a href="/w3css/default.asp" class="w3-button w3-dark-grey">LEARN W3.CSS</a></div>
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<h2 class="w3-xxlarge">Color Picker</h2>
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<div class="w3-col l4 w3-center c14">
<h2 class="w3-xxlarge">Bootstrap</h2>
<h4 class="w3-text-dark-grey">A CSS framework for designing better web pages</h4>
<a href="/bootstrap/default.asp" class="w3-button w3-dark-grey">LEARN BOOTSTRAP</a></div>
</div>
<br />
<div class="w3-dark-grey w3-center w3-padding-large w3-padding-48 c16">
<h2 class="w3-xxlarge">Exercises</h2>
<h4>Test yourself with exercises for HTML, CSS and JavaScript</h4>
<div class="w3-row-padding w3-content">
<div class="w3-third">
<p><a class="w3-btn w3-green w3-block w3-padding-16" xstyle="max-width:300px" href="/html/exercise.asp" target="_blank">HTML Exercises »</a></p>
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<div class="w3-third">
<p><a class="w3-btn w3-green w3-block w3-padding-16" href="/css/exercise.asp" target="_blank">CSS Exercises »</a></p>
</div>
<div class="w3-third">
<p><a class="w3-btn w3-green w3-block w3-padding-16" href="/js/exercise_js.asp?filename=exercise_js_variables1" target="_blank">JavaScript Exercises »</a></p>
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</div>
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<h2 class="w3-xxlarge">Web Templates</h2>
<h4 class="w3-text-dark-grey">Browse our selection of <strong>free</strong> responsive HTML Templates</h4>
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<h2 class="w3-xxlarge">How To Section</h2>
<h4 class="w3-text-dark-grey">Code snippets for HTML, CSS and JavaScript</h4>
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<div class="certoverlay"><br class="w3-hide-small w3-hide-medium" />
<h2>Web Certificates</h2>
<h3>Get Certified in HTML, CSS, and JavaScript</h3>
</div>
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<p class="w3-display-middle getcert"><a href="/cert/default.asp" class="w3-button w3-green w3-hover-white w3-padding-large c22">Get Certified »</a></p>
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Warnings Errors and Accessibility

line 724 column 47 - Warning: '<' + '/' + letter not allowed here
line 732 column 131 - Warning: '<' + '/' + letter not allowed here
line 740 column 47 - Warning: '<' + '/' + letter not allowed here
line 752 column 131 - Warning: '<' + '/' + letter not allowed here
line 766 column 159 - Warning: '<' + '/' + letter not allowed here
line 766 column 254 - Warning: '<' + '/' + letter not allowed here

Accessibility Checks:

line 179 column 2 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 180 column 2 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 181 column 2 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 182 column 2 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 184 column 3 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 185 column 3 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 256 column 2 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 258 column 3 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 260 column 3 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 262 column 3 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 268 column 2 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 335 column 2 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 389 column 2 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 667 column 2 - Access: [9.3.1.3]: <script> not keyboard accessible (onClick).
line 161 column 1 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 163 column 1 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 164 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 166 column 3 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 172 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 175 column 1 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 176 column 1 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 180 column 195 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 181 column 198 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 182 column 192 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 255 column 1 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 452 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 458 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 459 column 3 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 477 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 491 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 499 column 1 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 500 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 506 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 523 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 529 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 530 column 3 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 553 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 560 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 567 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 576 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 581 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 583 column 64 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 585 column 2 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 593 column 1 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 613 column 42 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 619 column 1 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 623 column 5 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 625 column 9 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 628 column 9 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 637 column 5 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 643 column 40 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 648 column 4 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 649 column 4 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 650 column 4 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 651 column 4 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 652 column 4 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 653 column 4 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 655 column 5 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 656 column 5 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 659 column 5 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 660 column 5 - Access: [6.1.1.3]: style sheets require testing (style attribute).
line 11 column 1 - Access: [6.2.2.2]: text equivalents require updating (script).
line 11 column 1 - Access: [6.3.1.1]: programmatic objects require testing (script).
line 11 column 1 - Access: [8.1.1.1]: ensure programmatic objects are accessible (script).
line 11 column 1 - Access: [7.1.1.1]: remove flicker (script).
line 11 column 1 - Access: [2.1.1.4]: ensure information not conveyed through color alone (script).
line 11 column 1 - Access: [1.1.10.1]: <script> missing <noscript> section.
line 26 column 1 - Access: [6.1.1.2]: style sheets require testing (style element).
line 256 column 2 - Access: [13.1.1.1]: link text not meaningful.
line 471 column 4 - Access: [10.1.1.2]: new windows require warning (_blank).
line 489 column 3 - Access: [10.1.1.2]: new windows require warning (_blank).
line 518 column 3 - Access: [10.1.1.2]: new windows require warning (_blank).
line 547 column 4 - Access: [10.1.1.2]: new windows require warning (_blank).
line 555 column 4 - Access: [3.5.1.1]: headers improperly nested.
line 562 column 4 - Access: [3.5.1.1]: headers improperly nested.
line 569 column 4 - Access: [3.5.1.1]: headers improperly nested.
line 577 column 3 - Access: [3.5.1.1]: headers improperly nested.
line 583 column 64 - Access: [2.1.1.1]: ensure information not conveyed through color alone (image).
line 583 column 64 - Access: [1.1.2.1]: <img> missing 'longdesc' and d-link.
line 586 column 3 - Access: [3.5.1.1]: headers improperly nested.
line 594 column 3 - Access: [3.5.1.1]: headers improperly nested.
line 598 column 6 - Access: [10.1.1.2]: new windows require warning (_blank).
line 601 column 6 - Access: [10.1.1.2]: new windows require warning (_blank).
line 604 column 6 - Access: [10.1.1.2]: new windows require warning (_blank).
line 610 column 3 - Access: [3.5.1.1]: headers improperly nested.
line 613 column 42 - Access: [2.1.1.1]: ensure information not conveyed through color alone (image).
line 613 column 42 - Access: [1.1.2.1]: <img> missing 'longdesc' and d-link.
line 620 column 3 - Access: [3.5.1.1]: headers improperly nested.
line 637 column 5 - Access: [2.1.1.1]: ensure information not conveyed through color alone (image).
line 638 column 5 - Access: [1.1.2.1]: <img> missing 'longdesc' and d-link.
line 650 column 4 - Access: [10.1.1.2]: new windows require warning (_blank).
line 653 column 4 - Access: [10.1.1.2]: new windows require warning (_blank).
line 655 column 5 - Access: [10.1.1.2]: new windows require warning (_blank).
line 655 column 5 - Access: [13.1.1.1]: link text not meaningful.
line 656 column 5 - Access: [13.1.1.1]: link text not meaningful.
line 659 column 5 - Access: [10.1.1.2]: new windows require warning (_blank).
line 659 column 5 - Access: [13.1.1.1]: link text not meaningful.
line 660 column 5 - Access: [13.1.1.1]: link text not meaningful.
line 677 column 1 - Access: [6.2.2.2]: text equivalents require updating (script).
line 677 column 1 - Access: [6.3.1.1]: programmatic objects require testing (script).
line 677 column 1 - Access: [8.1.1.1]: ensure programmatic objects are accessible (script).
line 677 column 1 - Access: [7.1.1.1]: remove flicker (script).
line 677 column 1 - Access: [2.1.1.4]: ensure information not conveyed through color alone (script).
line 677 column 1 - Access: [1.1.10.1]: <script> missing <noscript> section.
line 772 column 1 - Access: [6.2.2.2]: text equivalents require updating (script).
line 772 column 1 - Access: [6.3.1.1]: programmatic objects require testing (script).
line 772 column 1 - Access: [8.1.1.1]: ensure programmatic objects are accessible (script).
line 772 column 1 - Access: [7.1.1.1]: remove flicker (script).
line 772 column 1 - Access: [2.1.1.4]: ensure information not conveyed through color alone (script).
line 772 column 1 - Access: [1.1.10.1]: <script> missing <noscript> section.
line 773 column 1 - Access: [6.2.2.2]: text equivalents require updating (script).
line 773 column 1 - Access: [6.3.1.1]: programmatic objects require testing (script).
line 773 column 1 - Access: [8.1.1.1]: ensure programmatic objects are accessible (script).
line 773 column 1 - Access: [7.1.1.1]: remove flicker (script).
line 773 column 1 - Access: [2.1.1.4]: ensure information not conveyed through color alone (script).
line 773 column 1 - Access: [1.1.10.1]: <script> missing <noscript> section.
line 774 column 1 - Access: [6.2.2.2]: text equivalents require updating (script).
line 774 column 1 - Access: [6.3.1.1]: programmatic objects require testing (script).
line 774 column 1 - Access: [8.1.1.1]: ensure programmatic objects are accessible (script).
line 774 column 1 - Access: [7.1.1.1]: remove flicker (script).
line 774 column 1 - Access: [2.1.1.4]: ensure information not conveyed through color alone (script).
line 774 column 1 - Access: [1.1.10.1]: <script> missing <noscript> section.
line 598 column 6 - Warning: <a> proprietary attribute "xstyle"
Info: Document content looks like HTML5
<HTMLYSE> found 7 warnings and 0 errors!