w3 itself being spoofed?

[W3C]<http://www.w3.org/>Markup Validation Service<http://validator.w3.org/>

Check the markup (HTML, XHTML, …) of Web documents

  *   Jump To:
  *   Validation Output<http://validator.w3.org/check?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&No200=1&verbose=1&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices#result>
  *   Source Listing<http://validator.w3.org/check?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&No200=1&verbose=1&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices#source>

Errors found while checking this document as XHTML 1.0 Strict!
Result:

3 Errors

Address:

Modified:

Wed, 05 Apr 2017 20:40:14 GMT

Server:

Jigsaw/2.3.0-beta4

Size:

(undefined)

Content-Type:

text/html

Encoding:

utf-8

Doctype:

XHTML 1.0 Strict


Root Element:

html

Root Namespace:

http://www.w3.org/1999/xhtml



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Options
Show Source

Show Outline

List Messages Sequentially Group Error Messages by Type

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Verbose Output

Clean up Markup with HTML-Tidy


Help<http://validator.w3.org/docs/users.html#Options> on the options is available.

↑ Top<http://validator.w3.org/check?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&No200=1&verbose=1&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices#jumpbar>

Validation Output: 3 Errors

  1.  [Error] Line 192<http://validator.w3.org/check?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&No200=1&verbose=1&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices#line-192>, Column 18: ID "vext_warning_input" already defined

      <label id="vext_warning_input">Vendor Extensions:</label>

✉<http://validator.w3.org/feedback.html?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F;errmsg_id=141#errormsg>

An "id" is a unique identifier. Each time this attribute is used in a document it must have a different value. If you are using this attribute as a hook for style sheets it may be more appropriate to use classes (which group elements) than id (which are used to identify exactly one element).

  1.  [Info] Line 102<http://validator.w3.org/check?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&No200=1&verbose=1&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices#line-102>, Column 18: ID "vext_warning_input" first defined here

      <label id="vext_warning_input">Vendor Extensions:</label>

  1.  [Error] Line 291<http://validator.w3.org/check?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&No200=1&verbose=1&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices#line-291>, Column 18: ID "vext_warning_input" already defined

      <label id="vext_warning_input">Vendor Extensions:</label>

✉<http://validator.w3.org/feedback.html?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F;errmsg_id=141#errormsg>

An "id" is a unique identifier. Each time this attribute is used in a document it must have a different value. If you are using this attribute as a hook for style sheets it may be more appropriate to use classes (which group elements) than id (which are used to identify exactly one element).

  1.  [Info] Line 102<http://validator.w3.org/check?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&No200=1&verbose=1&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices#line-102>, Column 18: ID "vext_warning_input" first defined here

      <label id="vext_warning_input">Vendor Extensions:</label>

  1.  [Error] Line 294<http://validator.w3.org/check?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&No200=1&verbose=1&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices#line-294>, Column 19: ID "vext_warning_input" already defined

      <select id="vext_warning_input" name="vextwarning">

✉<http://validator.w3.org/feedback.html?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F;errmsg_id=141#errormsg>

An "id" is a unique identifier. Each time this attribute is used in a document it must have a different value. If you are using this attribute as a hook for style sheets it may be more appropriate to use classes (which group elements) than id (which are used to identify exactly one element).

  1.  [Info] Line 102<http://validator.w3.org/check?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&No200=1&verbose=1&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices#line-102>, Column 18: ID "vext_warning_input" first defined here

      <label id="vext_warning_input">Vendor Extensions:</label>

↑ Top<http://validator.w3.org/check?uri=http%3A%2F%2Fjigsaw.w3.org%2Fcss-validator%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&No200=1&verbose=1&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices#jumpbar>

Source Listing

Below is the source input I used for this validation:

  1.  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  2.  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
  3.  <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" dir="ltr">
  4.  <head>
  5.  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  6.  <meta http-equiv="Content-Script-Type" content="text/javascript" />
  7.  <meta http-equiv="Content-Style-Type" content="text/css" />
  8.  <title>The W3C CSS Validation Service</title>
  9.  <link rev="made" href="mailto:www-validator-css@w3.org" />
  10. <link rev="start" href="./" title="Home page for the W3C CSS Validation Service" />
  11. <style type="text/css" media="all">
  12. @import "style/base.css";
  13. </style>
  14. <script type="text/javascript" src="scripts/mootools.js"></script>
  15. <script type="text/javascript" src="scripts/w3c-validator.js"></script>
  16. </head>
  17.
  18. <body>
  19. <div id="banner">
  20. <h1 id="title"><a href="http://www.w3.org/"><img alt="W3C" width="110" height="61" id="logo" src="./images/w3c.png" /></a>
  21. <a href="./"><span>CSS Validation Service</span></a></h1>
  22. <p id="tagline">
  23. Check Cascading Style Sheets (CSS) and (X)HTML documents with style sheets
  24. </p>
  25. </div>
  26. <div id="frontforms">
  27. <ul id="tabset_tabs">
  28. <li><a href="#validate-by-uri" class="active">By URI</a></li><li><a href="#validate-by-upload">By file upload</a></li><li><a href="#validate-by-input">By direct input</a></li>
  29. </ul>
  30. <div id="fields">
  31.
  32. <fieldset id="validate-by-uri" class="tabset_content front">
  33. <legend class="tabset_label">Validate by URI</legend>
  34. <form method="get" action="validator">
  35. <p class="instructions">
  36. Enter the URI of a document (HTML with CSS or CSS only) you would like validated:
  37. </p>
  38. <p>
  39. <label title="Address of page to Validate" for="uri">Address:
  40. <input type="text" name="uri" id="uri" size="45" />
  41. </label>
  42. </p>
  43. <fieldset id="extra_opt_uri" class="moreoptions">
  44. <legend class="toggletext" title="Show/Hide extra validation options">More Options</legend>
  45. <div class="options">
  46. <table>
  47. <tr>
  48. <th id="header_profile_uri">
  49. <label for="profile_uri">Profile:</label>
  50. </th>
  51. <td headers="header_profile_uri">
  52. <select id="profile_uri" name="profile">
  53. <option value="none">No special profile</option>
  54. <option value="css1">CSS level 1</option>
  55. <option value="css2">CSS level 2</option>
  56. <option value="css21">CSS level 2.1</option>
  57. <option selected="selected" value="css3">CSS level 3</option>
  58. <option value="css3svg">CSS Level 3 + SVG</option>
  59. <option value="svg">SVG</option>
  60. <option value="svgbasic">SVG Basic</option>
  61. <option value="svgtiny">SVG tiny</option>
  62. <option value="mobile">Mobile</option>
  63. <option value="atsc-tv">ATSC TV profile</option>
  64. <option value="tv">TV profile</option>
  65. </select>
  66. </td>
  67. <th id="header_medium_uri">
  68. <label for="medium_uri">Medium:</label>
  69. </th>
  70. <td headers="header_medium_uri">
  71. <select id="medium_uri" name="usermedium">
  72. <option selected="selected" value="all">All</option>
  73. <option value="aural">aural</option>
  74. <option value="braille">braille</option>
  75. <option value="embossed">embossed</option>
  76. <option value="handheld">handheld</option>
  77. <option value="print">print</option>
  78. <option value= "projection">projection</option>
  79. <option value="screen">screen</option>
  80. <option value="tty">TTY</option>
  81. <option value="tv">TV</option>
  82. <option value="presentation">presentation</option>
  83. </select>
  84. </td>
  85. </tr>
  86. <tr>
  87. <th id="header_warning_uri">
  88. <label for="warning_uri">Warnings:</label>
  89. </th>
  90. <td
  91. colspan="1"
  92. headers="header_warning_uri">
  93. <select id="warning_uri" name="warning">
  94. <option value="2">All</option>
  95. <option selected="selected" value="1">Normal report</option>
  96. <option value="0">Most important</option>
  97. <option value="no">No warnings</option>
  98. </select>
  99. </td>
  100.
  101. <th id="header_vext_warning_uri">
  102. <label id="vext_warning_input">Vendor Extensions:</label>
  103. </th>
  104. <td headers="header_vext_warning_uri">
  105. <select id="vext_warning_uri" name="vextwarning">
  106. <option value="">Default</option>
  107. <option value="true">Warnings</option>
  108. <option value="false">Errors</option>
  109. </select>
  110. </td>
  111.
  112. </tr>
  113. </table>
  114. </div><!-- item_contents -->
  115. </fieldset><!-- invisible -->
  116.
  117. <p class="submit_button">
  118. <input type="hidden" name="lang" value="en" />
  119. <label title="Submit URI for validation">
  120. <input type="submit" value="Check" />
  121. </label>
  122. </p>
  123. </form>
  124. </fieldset>
  125.
  126. <fieldset id="validate-by-upload" class="tabset_content front">
  127. <legend class="tabset_label">Validate by file upload</legend>
  128. <form method="post" enctype="multipart/form-data" action="validator">
  129. <p class="instructions">Choose the document you would like validated:</p>
  130. <p>
  131. <label title="Choose a Local File to Upload and Validate" for="file">Local CSS file:
  132. <input type="file" id="file" name="file" size="30" /></label></p>
  133. <fieldset id="extra_opt_upload" class="moreoptions">
  134. <legend class="toggletext" title="Show/Hide extra validation options">More Options</legend>
  135. <div class="options">
  136. <table>
  137. <tr>
  138. <th id="header_profile_upload">
  139. <label for="profile_upload">Profile:</label>
  140. </th>
  141. <td headers="header_profile_upload">
  142. <select id="profile_upload" name="profile">
  143. <option value="none">No special profile</option>
  144. <option value="css1">CSS level 1</option>
  145. <option value="css2">CSS level 2</option>
  146. <option value="css21">CSS level 2.1</option>
  147. <option selected="selected" value="css3">CSS level 3</option>
  148. <option value="css3svg">CSS Level 3 + SVG</option>
  149. <option value="svg">SVG</option>
  150. <option value="svgbasic">SVG Basic</option>
  151. <option value="svgtiny">SVG tiny</option>
  152. <option value="mobile">Mobile</option>
  153. <option value="atsc-tv">ATSC TV profile</option>
  154. <option value="tv">TV profile</option>
  155. </select>
  156. </td>
  157. <th id="header_medium_upload">
  158. <label for="medium_upload">Medium:</label>
  159. </th>
  160. <td headers="header_medium_upload">
  161. <select id="medium_upload" name="usermedium">
  162. <option selected="selected" value="all">All</option>
  163. <option value="aural">aural</option>
  164. <option value="braille">braille</option>
  165. <option value="embossed">embossed</option>
  166. <option value="handheld">handheld</option>
  167. <option value="print">print</option>
  168. <option value= "projection">projection</option>
  169. <option value="screen">screen</option>
  170. <option value="tty">TTY</option>
  171. <option value="tv">TV</option>
  172. <option value="presentation">presentation</option>
  173. </select>
  174. </td>
  175. </tr>
  176. <tr>
  177. <th id="header_warning_upload">
  178. <label for="warning_upload">Warnings:</label>
  179. </th>
  180. <td
  181. colspan="1"
  182. headers="header_warning_upload">
  183. <select id="warning_upload" name="warning">
  184. <option value="2">All</option>
  185. <option selected="selected" value="1">Normal report</option>
  186. <option value="0">Most important</option>
  187. <option value="no">No warnings</option>
  188. </select>
  189. </td>
  190.
  191. <th id="header_vext_warning_upload">
  192. <label id="vext_warning_input">Vendor Extensions:</label>
  193. </th>
  194. <td headers="header_vext_warning_upload">
  195. <select id="vext_warning_upload" name="vextwarning">
  196. <option value="">Default</option>
  197. <option value="true">Warnings</option>
  198. <option value="false">Errors</option>
  199. </select>
  200. </td>
  201.
  202. </tr>
  203. </table>
  204. </div><!-- item_contents -->
  205. </fieldset><!-- invisible -->
  206.
  207. <p class="submit_button">
  208. <input type="hidden" name="lang" value="en" />
  209. <label title="Submit file for validation">
  210. <input type="submit" value="Check" />
  211. </label>
  212. </p>
  213. </form>
  214. </fieldset>
  215.
  216. <fieldset id="validate-by-input" class="tabset_content front">
  217. <legend class="tabset_label">Validate by direct input</legend>
  218. <form action="validator" enctype="multipart/form-data" method="post">
  219. <p class="instructions">Enter the CSS you would like validated:</p>
  220. <p>
  221. <textarea name="text" rows="12" cols="70"></textarea>
  222. </p>
  223. <fieldset id="extra_opt_input" class="moreoptions">
  224. <legend class="toggletext" title="Show/Hide extra validation options">More Options</legend>
  225. <div class="options">
  226. <table>
  227. <tr>
  228. <th id="header_profile_input">
  229. <label for="profile_input">Profile:</label>
  230. </th>
  231. <td headers="header_profile_input">
  232. <select id="profile_input" name="profile">
  233. <option value="none">No special profile</option>
  234. <option value="css1">CSS level 1</option>
  235. <option value="css2">CSS level 2</option>
  236. <option value="css21">CSS level 2.1</option>
  237. <option selected="selected" value="css3">CSS level 3</option>
  238. <option value="css3svg">CSS Level 3 + SVG</option>
  239. <option value="svg">SVG</option>
  240. <option value="svgbasic">SVG Basic</option>
  241. <option value="svgtiny">SVG tiny</option>
  242. <option value="mobile">Mobile</option>
  243. <option value="atsc-tv">ATSC TV profile</option>
  244. <option value="tv">TV profile</option>
  245. </select>
  246. </td>
  247. <th id="header_medium_input">
  248. <label for="medium_input">Medium:</label>
  249. </th>
  250. <td headers="header_medium_input">
  251. <select id="medium_input" name="usermedium">
  252. <option selected="selected" value="all">All</option>
  253. <option value="aural">aural</option>
  254. <option value="braille">braille</option>
  255. <option value="embossed">embossed</option>
  256. <option value="handheld">handheld</option>
  257. <option value="print">print</option>
  258. <option value= "projection">projection</option>
  259. <option value="screen">screen</option>
  260. <option value="tty">TTY</option>
  261. <option value="tv">TV</option>
  262. <option value="presentation">presentation</option>
  263. </select>
  264. </td>
  265. </tr>
  266. <tr>
  267. <th id="header_type_input">
  268. <label for="type_input">Type:</label>
  269. </th>
  270. <td headers="header_type_input">
  271. <select id="type_input" name="type">
  272. <option selected="selected" value="none">Automatic</option>
  273. <option value="html">HTML</option>
  274. <option value="css">CSS</option>
  275. </select>
  276. </td>
  277. <th id="header_warning_input">
  278. <label for="warning_input">Warnings:</label>
  279. </th>
  280. <td
  281. headers="header_warning_input">
  282. <select id="warning_input" name="warning">
  283. <option value="2">All</option>
  284. <option selected="selected" value="1">Normal report</option>
  285. <option value="0">Most important</option>
  286. <option value="no">No warnings</option>
  287. </select>
  288. </td>
  289.
  290. <th id="header_vext_warning_input">
  291. <label id="vext_warning_input">Vendor Extensions:</label>
  292. </th>
  293. <td headers="header_vext_warning_input">
  294. <select id="vext_warning_input" name="vextwarning">
  295. <option value="">Default</option>
  296. <option value="true">Warnings</option>
  297. <option value="false">Errors</option>
  298. </select>
  299. </td>
  300.
  301. </tr>
  302. </table>
  303. </div><!-- item_contents -->
  304. </fieldset><!-- invisible -->
  305.
  306. <p class="submit_button">
  307. <input type="hidden" name="lang" value="en" />
  308. <label title="Submit your input for validation">
  309. <input type="submit" value="Check" />
  310. </label>
  311. </p>
  312. </form>
  313. </fieldset>
  314. </div><!-- fields -->
  315. </div> <!-- frontforms -->
  316.
  317. <div id="w3c-include"><script type="text/javascript" src="//www.w3.org/QA/Tools/w3c-include.js"></script></div>
  318.
  319. <div class="intro">
  320. <p><strong>Note</strong>: If you want to validate your CSS style sheet embedded in an (X)HTML document, you should first <a href="http://validator.w3.org/">check that the (X)HTML you use is valid</a>.
  321. </p>
  322. </div>
  323. <ul class="navbar" id="menu">
  324. <li><a href="about.html" title="About this service">About</a> <span class="hideme">|</span></li>
  325. <li><a href="documentation.html" title="Documentation for the W3C CSS Validation Service">Documentation</a> <span class="hideme">|</span></li>
  326. <li><a href="DOWNLOAD.html" title="Download and install the CSS validator">Download</a> <span class="hideme">|</span></li>
  327. <li><a href="Email.html" title="How to provide feedback on this service">Feedback</a> <span class="hideme">|</span></li>
  328. <li><a href="thanks.html" title="Credits and Acknowlegments">Credits</a></li>
  329. </ul>
  330.
  331. <ul id="lang_choice">
  332.
  333. <li><a href="validator.html.de"
  334. lang="de"
  335. xml:lang="de"
  336. hreflang="de"
  337. rel="alternate">Deutsch</a>
  338. </li>
  339.
  340. <li><a href="validator.html.en"
  341. lang="en"
  342. xml:lang="en"
  343. hreflang="en"
  344. rel="alternate">English</a>
  345. </li>
  346.
  347. <li><a href="validator.html.es"
  348. lang="es"
  349. xml:lang="es"
  350. hreflang="es"
  351. rel="alternate">Español</a>
  352. </li>
  353.
  354. <li><a href="validator.html.fr"
  355. lang="fr"
  356. xml:lang="fr"
  357. hreflang="fr"
  358. rel="alternate">Français</a>
  359. </li>
  360.
  361. <li><a href="validator.html.ko"
  362. lang="ko"
  363. xml:lang="ko"
  364. hreflang="ko"
  365. rel="alternate">한국어</a>
  366. </li>
  367.
  368. <li><a href="validator.html.it"
  369. lang="it"
  370. xml:lang="it"
  371. hreflang="it"
  372. rel="alternate">Italiano</a>
  373. </li>
  374.
  375. <li><a href="validator.html.nl"
  376. lang="nl"
  377. xml:lang="nl"
  378. hreflang="nl"
  379. rel="alternate">Nederlands</a>
  380. </li>
  381.
  382. <li><a href="validator.html.ja"
  383. lang="ja"
  384. xml:lang="ja"
  385. hreflang="ja"
  386. rel="alternate">日本語</a>
  387. </li>
  388.
  389. <li><a href="validator.html.pl-PL"
  390. lang="pl-PL"
  391. xml:lang="pl-PL"
  392. hreflang="pl-PL"
  393. rel="alternate">Polski</a>
  394. </li>
  395.
  396. <li><a href="validator.html.pt-BR"
  397. lang="pt-BR"
  398. xml:lang="pt-BR"
  399. hreflang="pt-BR"
  400. rel="alternate">Português</a>
  401. </li>
  402.
  403. <li><a href="validator.html.ru"
  404. lang="ru"
  405. xml:lang="ru"
  406. hreflang="ru"
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Received on Monday, 19 June 2017 09:24:38 UTC