.pixel_particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.pixel {
    transform-box: fill-box;
    transform-origin: center;
    animation: pixelFloat 4s ease-in-out infinite;
}

@keyframes pixelFloat {
    0% {
        opacity: 0.25;
        transform: translate(0, 0);
    }

    50% {
        opacity: 0.8;
        transform: translate(4px, -6px);
    }

    100% {
        opacity: 0.25;
        transform: translate(0, 0);
    }
}