Listingbook.co W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
X-UA-Compatible HTTP header must have the value “IE=edge”, was “IE=8”.
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS 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 “BugEvents”.
Bad value “” for attribute “alt” on element “input”: Must not be empty.
The “center” element is obsolete. Use CSS instead.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The first occurrence of ID “BugEvents” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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