Sbu.edu.tr W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
An element with “role=tab” must be contained in, or owned by, an element with “role=tablist”.
Duplicate ID “menusolresim”.
Text not allowed in element “ul” in this context.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “bigPicture”.
Element “p” not allowed as child of element “strong” in this context. (Suppressing further errors from this subtree.)
Element “img” is missing required attribute “src”.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Element “figcaption” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
The “aria-controls” attribute must point to an element in the same document.
Warnings:
The first occurrence of ID “menusolresim” was here.
The first occurrence of ID “bigPicture” was here.
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