body {
    margin: 0;
    background: #111;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    position: relative;
    display: inline-block;
}

h1 {
    font-size: 64px;
    color: #00ff88;
    text-align: center;
    text-shadow: 0 0 40px #00ff88;
    position: relative;
    z-index: 2;
}

/* слой с частицами */
canvas {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
}