Sapiens.cat 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 its “name” attribute set to the value “description”.
Attribute “alt” not allowed on element “a” at this point.
Bad value “” for attribute “height” on element “img”: The empty string is not a valid non-negative integer.
Bad value “” for attribute “width” on element “img”: The empty string is not a valid non-negative integer.
Duplicate ID “newsletter_subscription_email”.
Duplicate ID “newsletter_subscription_submit”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “rel” not allowed on element “img” at this point.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
The value of attribute “title” on element “img” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The value of attribute “alt” on element “img” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The first occurrence of ID “newsletter_subscription_email” was here.
The first occurrence of ID “newsletter_subscription_submit” was here.
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