<link type="text/css" href=" https://www.w3schools.com/w3css/4/w3.css" rel="stylesheet">
<div class="w3-bar w3-red">
<a class="w3-bar-item w3-button w3-hover-blue">Button</a>
</div>
I want to make that if you click on it, it changes its own color. And if you click it again, it changes to the original color. (see the hover) I don't know how to do, because it's a class, and the color is in the bar.