@keyframes blackhole{to{transform:translateY(-100vh)}}.blackhole:after{content:"";width:calc(100% + 10px);height:calc(100% + 10px);z-index:5px;border:5px solid #0000;border-color:#000 #0000 #0000 #000;border-radius:50%;position:absolute;top:-5px;left:-5px;transform:rotate(45deg)}