Imakatsu.co.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Malformed byte sequence: “83”.
Malformed byte sequence: “81”.
Quirky doctype. Expected “<!DOCTYPE html>”.
Internal encoding declaration “shift_jis” disagrees with the actual encoding of the document (“utf-8”).
Attribute “leftmargin” not allowed on element “body” at this point.
Attribute “topmargin” not allowed on element “body” at this point.
The “bgcolor” attribute on the “body” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “body” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “body” element is obsolete.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The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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