html,
body {
    margin: 0;
    height: 100%;
    overflow: hidden;
    background-image: url('img.avif');
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}

h1 {
    text-align: center;
    font-family: 'Calligraffitti', cursive;
    font-weight: 700;
    font-size: 20vw;
    text-shadow: -15px 5px 20px #ced0d3;
    letter-spacing: 0.02em;
    color: #F9f1cc;
    text-shadow: 5px 5px 0px #FFB650,
        10px 10px 0px #FFD662,
        15px 15px 0px #FF80BF,
        20px 20px 0px #EF5097,
        25px 25px 0px #6868AC,
        30px 30px 0px #90B1E0;
}