Nhc.ac.uk W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “vspace” attribute on the “img” element is obsolete. Use CSS instead.
The “hspace” attribute on the “img” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
The “big” element is obsolete. Use CSS instead.
Bad value “tel:01462 424242” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Stray end tag “div”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Empty heading.
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