Chambers.com.au W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
Duplicate ID “requirements_resources”.
Element “area” is missing required attribute “alt”.
The “name” attribute on the “img” element is obsolete. Use the “id” attribute instead.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
Bad value “Motivating the Systems Engineer” for attribute “id” on element “img”: An ID must not contain whitespace.
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The “border” attribute is obsolete.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.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The first occurrence of ID “requirements_resources” was here.
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