Tibe.org.tw W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “bookmark” for attribute “rel” on element “link”: The string “bookmark” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “aid” not allowed on element “a” at this point.
Bad value “1” for attribute “type” on element “a”: Subtype missing.
Attribute “url” not allowed on element “a” at this point.
Attribute “blank” not allowed on element “a” at this point.
Forbidden code point U+0016.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “3” for attribute “type” on element “a”: Subtype missing.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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