Bike-eu.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “noshade” attribute on the “hr” element is obsolete. Use CSS instead.
The “size” attribute on the “hr” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “topsidebar”.
Warnings:
The first occurrence of ID “topsidebar” was here.
The “contentinfo” role is unnecessary for element “footer”.
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