body {
    background-color: white;
}
h2 {
    color: black;
    text-align: center;
    font-size: 8lvh;
    margin-bottom: 20px;
}
button {
    font-size: 5lvb;
    padding: 5px 30px;
    border-radius: 10px;
    margin: 4lvh;
    text-align: center;
    border: none;
    cursor: pointer;
    color: black;          
    font-weight: bold;
}
button:hover {
    border-radius: 12px;
    background-color:whie;
    color: black;             
    padding: 8px 30px;
}