Aipai.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include more than one “meta” element with a “charset” attribute.
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 “” for attribute “action” on element “form”: Must be non-empty.
Attribute “placeholder” not allowed on element “input” at this point.
Attribute “placeholder” is only allowed when the input type is “email”, “number”, “password”, “search”, “tel”, “text”, or “url”.
Bad value “” for attribute “height” on element “img”: The empty string is not a valid non-negative integer.
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “osrc” not allowed on element “img” at this point.
Duplicate ID “pic_0”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Too many messages.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The first occurrence of ID “pic_0” was here.
Empty heading.
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