* { margin:0; padding:0}

body { height: 2000vh; }

main {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    z-index: 1;
    color: #fff;
    background: rgba(0, 0, 0, 0.45);
    padding: 0.75rem 1rem;
    border-radius: 10px;
    box-shadow: 0 6px 24px rgba(0,0,0,0.35);
    backdrop-filter: blur(1px);
    -webkit-backdrop-filter: blur(1px);
    max-width: 60ch;
    width: min(90vw, 60ch);
    text-wrap: balance;
}

canvas { 
    pointer-events: none; 
    position: fixed; 
    width: 100%; 
    height: 100%; 
    left: 0; 
    top: 0;
    opacity: 0.9;
    z-index: 0;
}