Sofia-airport.bg 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 a “http-equiv” attribute whose value is “content-type”.
Forbidden code point U+0003.
Duplicate ID “content”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “content” was here.
Empty heading.
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