Impression.co.uk W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
A “charset” attribute on a “meta” element found after the first 1024 bytes.
Bad value “true” for attribute “autoplay” on element “video”.
Bad value “true” for attribute “loop” on element “video”.
Duplicate ID “Layer_1”.
Duplicate ID “content”.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “Layer_1” was here.
The first occurrence of ID “content” was here.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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