html {
    background: radial-gradient(ellipse at bottom, #1B2735 0%, #090A0F 100%);
    overflow-y: auto;
}

body {
    margin: 0;
    color: white;
    text-align: center;
    font-family: sans-serif;
    justify-content: center;
    align-items: center;
    margin-top: 30px;
}

h1 {
    display: block;
}

a {
    background: linear-gradient(135deg, #667eea, #764ba2);
    font-weight: bold;
    color: white;
    padding: 10px 20px;
    border-radius: 100px;
    border: none;
    margin-top: 10px;
    text-decoration: none;
}

#underlay {
    position: fixed;
    inset: 0;
    z-index: -1;
}