Snecma.com 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=edge,chrome=1”.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
CSS: “background”: “#ddddd” is not a “background-color” value.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “lvl2-5-children”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate attribute “class”.
Warnings:
The first occurrence of ID “lvl2-5-children” was here.
The “date” input type is not supported in all browsers. Please be sure to test, and consider using a polyfill.
Indonesia ID