How to create hover effect ??

Answer 1

With the pseudo class hover

https://code.sololearn.com/WJUTBgA5qTUw/?ref=app

Answer 2

Use pseudo class ::hover
And for better visual use
transition in css

Ex :-
button{
padding: 5px 15 px;
transition: all 0.35s ease-in;
}
button:hover{
color: blue;
}