hover css w3schools code example

Example 1: css hover

.a:hover{background-color: black;}

Example 2: on hover css

/* Changes an element's color on hover */

.selector {
	background-color: black;
}

.selector:hover {
	background-color: blue;
}

Example 3: hover in html

//Select and style a link when you mouse over it:
  
    a:hover
 { 

   background-color: yellow;

 }