Wikihow.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
CSS: “background”: “contain” is not a “background-color” value.
CSS: “font-size”: Parse Error.
CSS: “top-left-border-radius”: Property “top-left-border-radius” doesn't exist.
CSS: “background-image”: “ ” is an incorrect operator.
Attribute “x-webkit-speech” not allowed on element “input” at this point.
Attribute “name” not allowed on element “div” at this point.
Character reference was not terminated by a semicolon.
Attribute “loading” not allowed on element “img” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “_lpchecked” not allowed on element “form” at this point.
Attribute “alt” not allowed on element “input” at this point.
Element “img” is missing required attribute “src”.
Start tag “a” seen but an element of the same type was already open.
Warnings:
The “textbox” role is unnecessary for an “input” element that has no “list” attribute and whose type is “text”.
The “type” attribute is unnecessary for JavaScript resources.
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