Ysmu.am W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.
Bad value “true” for attribute “autoplay” on element “video”.
Attribute “plays-inline” not allowed on element “video” at this point.
Bad value “https://ysmu.am/website/images/video/Sequence 02.mp4” for attribute “src” on element “source”: Illegal character in path segment: space is not allowed.
Bad value “https://ysmu.am/website/images/video/Sequence 01.mp4” for attribute “src” on element “source”: Illegal character in path segment: space is not allowed.
Bad value “https://ysmu.am/website/images/video/Sequence 03.mp4” for attribute “src” on element “source”: Illegal character in path segment: space is not allowed.
Bad value “https://ysmu.am/website/images/video/Sequence 04.mp4” for attribute “src” on element “source”: Illegal character in path segment: space is not allowed.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “ul” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Start tag “a” seen but an element of the same type was already open.
End tag “a” violates nesting rules.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
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