Physicscatalyst.com W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “<” instead.
Bad value “60%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “60%” for attribute “height” on element “img”: Expected a digit but saw “%” 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 “drop92”.
Duplicate ID “drop12”.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “center” element is obsolete. Use CSS instead.
Bad value “image/middle school.png” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
Warnings:
The first occurrence of ID “drop92” was here.
The first occurrence of ID “drop12” was here.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
India IN