input focus border color change code example

Example 1: change input border color when selected

input:focus {
	outline: none;
  	border: 1px solid red;
}

Example 2: color background to input boxes on focus

input:focus {
  background-color: yellow;
}

Example 3: css focus change color

<style>
.dabutton:focus {
    background-color:yellow;
}
</style>
<button class="dabutton"></button> // <-- usage