.particles-container{z-index:0;width:100%;height:100%;position:absolute;top:0;left:0;overflow:hidden}.particle{border-radius:50%;animation:15s linear infinite float;position:absolute}@keyframes float{0%{opacity:.5;transform:translateY(0)rotate(0)}50%{opacity:1}to{opacity:0;transform:translateY(-1000px)rotate(720deg)}}