animation click css code example
Example: how to add animation to a button hover
.btn {
background-color: #ddd;
border: none;
color: black;
padding: 16px 32px;
text-align: center;
font-size: 16px;
margin: 4px 2px;
transition: 0.3s;
}
.btn:hover {
background-color: #3e8e41;
color: white;
}