body {
    margin: 0;
    background: linear-gradient(45deg, var(--dark), var(--blue));
    background-repeat: no-repeat;
    background-attachment: fixed;
}

body::before {
    content: "";
    position: fixed;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    top: 0;
}