The any-hover CSS media feature can be used to test whether any available input mechanism can hover over elements.
Syntax
The any-hover feature is specified as a keyword value chosen from the list below.
none- 
    
None of the available input mechanism(s) can hover conveniently, or there is no pointing input mechanism.
 hover- 
    
One or more available input mechanisms can conveniently hover over elements.
 
Examples
Testing whether input methods can hover
HTML
<a href="#">Try hovering over me!</a>
CSS
@media (any-hover: hover) {
  a:hover {
    background: yellow;
  }
}