Amberstudent.com 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.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “tel: +91-8080763763” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “tel: +1-(561)220-0757” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “tel: +44-7480538218” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “tel: +61-3-8592-4605” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “30px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
Stray start tag “script”.
Element “script” must not have attribute “charset” unless attribute “src” is also specified.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “banner” role is unnecessary for element “header”.
The “contentinfo” role is unnecessary for element “footer”.
Empty heading.
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