l14buttoneffect.html

<!DOCTYPE html>

<html>


<head>

<title>Button effect</title>

<style>

body{
    font-family: sans-serif;
    background-color: #222;
    height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;

    margin-top: 0;
    overflow: hidden;
}

a{

    font-size: 45px;
    text-decoration: none;
    color: white;

    border: 5px solid #fff;
    padding: 40px 80px;

    position: relative;

    overflow: hidden;
}


a::before{
    content: 'Thank You';

    width: 100%;
    height: 100%;

    background-color: tomato;

    position: absolute;
    top: 0;
    left: 0;

    display: flex;
    justify-content: center;
    align-items: center;

    transform: translateY(100%);

    transition: transform 1s;

}

a:hover::before{
    transform: translateY(0);
}

</style>

</head>

<body>
    

    <a href="#">Hover Me</a>

</body>

</html>