Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
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.
The “marginheight” attribute on the “body” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “body” element is obsolete. Use CSS instead.
The “topmargin” attribute on the “body” element is obsolete. Use CSS instead.
The “leftmargin” attribute on the “body” element is obsolete. Use CSS instead.
The “center” element is obsolete. Use CSS instead.
The “align” attribute on the “div” element is obsolete.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.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
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