inline css style border hover code example

Example 1: on hover css

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

.selector {
	background-color: black;
}

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

Example 2: how to make border hover effect in css

box-shadow: 0 0 5px <your color>, 0 0 5px <your color>, 0 0 10px <your color>;