Errors found while checking this document as XHTML 1.0 Strict!

Result: 3 Errors
:
: utf-8
: XHTML 1.0 Strict
Root Element: html
Root Namespace: http://www.w3.org/1999/xhtml
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Validation Output: 3 Errors

  1. Error Line 40, Column 44: there is no attribute "data-canonical-src" 
    …Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons…

    ✉

    You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).

    This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.

    How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.

  2. Error Line 40, Column 118: end tag for "img" omitted, but OMITTAG NO was specified 
    …src="https://s3.amazonaws.com/github/ribbons/forkme_left_green_007200.png"></a>

    ✉

    You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".

  3. Info Line 38, Column 44: start tag was here 
    …ef="https://github.com/sbopkg/sbopkg"><img style="position: absolute; top: 0; …
  4. Error Line 43, Column 119: end tag for "img" omitted, but OMITTAG NO was specified 
    …rc="https://s3.amazonaws.com/github/ribbons/forkme_right_green_007200.png"></a>

    ✉

    You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".

  5. Info Line 41, Column 44: start tag was here 
    …ef="https://github.com/sbopkg/sbopkg"><img style="position: absolute; top: 0; …

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