Is the HTML code below correctly formatted?
<div class="navbar" class="menu">foo</div>
Can two classes be applied to the same element?
Is the HTML code below correctly formatted?
<div class="navbar" class="menu">foo</div>
Can two classes be applied to the same element?
If you want to define two classes, you can separate them with a space, as shown below:
<div class="header navigation">bar</div>
Class serves as an attribute, not a tag. It is not permitted to have multiple attributes with the same name, as this constitutes an error.
[...]; if there is already an attribute on the token with the exact same name, then this is a duplicate-attribute parse error and the new attribute must be removed from the token.
https://html.spec.whatwg.org/multipage/parsing.html#attribute-name-state
Typically, browsers will simply disregard the second attribute. Therefore, in the scenario described, the class="menu" attribute is overlooked, and only the navbar class is applied. To utilize both classes, specify class="navbar menu".
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