Lakeaustin.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Empty heading.
The first occurrence of ID “checkin” was here.
The first occurrence of ID “checkout” was here.
The first occurrence of ID “f1_container” was here.
The first occurrence of ID “f1_card” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Errors:
Bad value “” for attribute “media” on element “link”: Media query ended prematurely.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate ID “checkin”.
Duplicate ID “checkout”.
Duplicate attribute “allowfullscreen”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “f1_container”.
Duplicate ID “f1_card”.
No “p” element in scope but a “p” end tag seen.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
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