Wireltern.ch W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
Errors:
Bad value “(min-width: 743px), (-webkit-min-device-pixel-ratio: 1.5), (min-resolution: 144dpi)” for attribute “media” on element “source”: Expected a digit, whitespace or “)” but saw “.” instead.
Bad value “(min-width: 640px), (-webkit-min-device-pixel-ratio: 1.5), (min-resolution: 144dpi)” for attribute “media” on element “source”: Expected a digit, whitespace or “)” but saw “.” instead.
Bad value “(-webkit-min-device-pixel-ratio: 1.5), (min-resolution: 144dpi)” for attribute “media” on element “source”: Expected a digit, whitespace or “)” but saw “.” instead.
Element “img” is missing required attribute “src”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
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