Akella.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad start tag in “img” in “head”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “noscript”.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
Bad value “https://www.youtube.com/embed/
1PCWk_LW1x4
?rel=0” for attribute “src” on element “iframe”: Tab, new line or carriage return found.
End tag “br”.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “>” instead.
Warnings:
The “button” role is unnecessary for element “button”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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