body
{
    margin: 0;
    padding: 0;
    height: 100vh;
}
#particles-js
{
    height: 100%;
    background: #262626;
    background-image: url('https://vincentgarreau.com/particles.js/assets/img/kbLd9vb_new.gif');
    background-size: 57.25% 30%;
    background-position: 0% 50%;
    background-repeat: no-repeat;
}