Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Stray end tag “script”.
Attribute “ss-offset” not allowed on element “div” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “http://twitter.com/share?url=https://www.systutorials.com/&text=SysTutorials: tutorials on Linux, systems and more” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “http://reddit.com/submit?url=https://www.systutorials.com/&title=SysTutorials: tutorials on Linux, systems and more” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “http://www.stumbleupon.com/submit?url=https://www.systutorials.com/&title=SysTutorials: tutorials on Linux, systems and more” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “https://www.addthis.com/bookmark.php?v=300&url=https://www.systutorials.com/&title=SysTutorials: tutorials on Linux, systems and more” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Attribute “ezaw” not allowed on element “span” at this point.
Attribute “ezah” not allowed on element “span” at this point.
Attribute “adunitname” not allowed on element “div” at this point.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Element “script” must not have attribute “async” unless attribute “src” is also specified.
No space between attributes.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
The “contentinfo” role is unnecessary for element “footer”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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