Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “stack-card” was here.
The first occurrence of ID “card-list” was here.
The first occurrence of ID “fav” was here.
The first occurrence of ID “stack-card-stack” was here.
The first occurrence of ID “myModalLabel” was here.
Empty heading.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Errors:
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “href” not allowed on element “button” at this point.
End tag “br”.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “stack-card”.
Duplicate ID “card-list”.
Duplicate ID “fav”.
Duplicate ID “stack-card-stack”.
Element “option” without attribute “label” must not be empty.
Attribute “target_” not allowed on element “a” at this point.
Duplicate ID “myModalLabel”.
The “itemprop” attribute was specified, but the element is not a property of any item.
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