html {
    width: 480px;
    height: 480px;
}

#central {
    width: 30rem;
    height: 30rem;
    background: radial-gradient(rgb(0, 255, 251), rgb(251, 237, 130));
    border-radius: 400px;
    font-size: 3rem;
}

a:hover {
    outline-color: black;
    outline-style: solid;
    outline-width: 15px;
    font-size: 3rem;

}