Adding class selector after pseudo selector in css

Is it possible to add a class selector after the pseudo class to my CSS rule like:

a:hover.my-class {
    background: red;
}

      

So if I hover on my anchor tag <a class="my-class">link</a>

, will it be red in all browsers? is this valid CSS?


Why do I need it

I have this problem because it is being generated from a mixin in SASS:

@mixin focus($classA, $classB) {
  &:focus {
    &#{$classA} {
      background: blue;
    }

    &#{$classB} {
      background: yellow;
    }
  }
}

a {
  @include focus('.class-a', '.class-b')
}

      

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2 answers


There is no such thing as a "pseudo selector".

There are two functions in selectors that start with "pseudo": a pseudo-class and a pseudo-element. They are completely different functions with different syntax rules.



You can put the class selector after the pseudo-class, for example :hover

, since they are both simple selectors and the order of the simple selectors in a compound selector does not matter (type and generic selectors are the only exceptions to this rule - they should always come first, for example a

in your example ).

You cannot place a class selector after a pseudo-element such as ::before

because a pseudo-element is not a simple selector. Your question may not be about pseudo-elements, but this distinction must be made due to the common use of the term "pseudo-selector" which incorrectly groups both functions into one general term (and frankly, the question gets more complicated than it really should be) ...

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Yes, you can add a class to the pseudo class.

This css is valid and working:

a:hover.hoverme {
  background:blue;
  color:white;
}

      

This works too:

a.hoverme:hover {
  background:blue;
  color:white;
}

      



Or you can add a pseudo class after the class.

.hoverme:hover {
  background:blue;
  color:white;
}
      

<a href="#" class="hoverme">Hover me!</a>
      

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You can check if your CSS is valid on the W3C CSS Validator page .

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