Taiwanhot.net W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Attribute “itemprop” not allowed on element “meta” at this point.
Bad value “auto” for attribute “width” on element “img”: Expected a digit but saw “a” instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “auto” for attribute “height” on element “img”: Expected a digit but saw “a” instead.
The “sizes” attribute may be specified only if the “srcset” attribute is also present.
No space between attributes.
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “"” not allowed on element “div” at this point.
Stray end tag “div”.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Text run is not in Unicode Normalization Form C.
Empty heading.
Attribute “"” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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