3daystartup.org W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
Consider avoiding viewport values that prevent users from resizing documents.
Empty heading.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The document is not mappable to XML 1.0 due to a trailing hyphen in a comment.
Errors:
Attribute “type” not allowed on element “iframe” at this point.
Bad value “true” for attribute “allowfullscreen” on element “iframe”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bogus comment.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
CSS: “color”: Parse Error.
CSS: “border-top-width”: “px” is not a “border-top-width” value.
CSS: “height”: only “0” can be a “unit”. You must put a unit after your number.
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