html, body {
    height: 100%;
}

body {
    margin: 0;
    background: linear-gradient(to bottom, white 0%, white 50%, #696969 100%);
}

canvas {
    display: block;
}

.particles {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
}

/*.logo {
    display: block;
    margin: 0 auto 20px auto;
    width: 80%;*/ /* shrink from 100% to 80% of the container */
    /*max-width: 250px;*/ /* shrink the max size */
    /*height: auto;
    padding-top: 20vh;
}*/