.particle {height: max(max(30vw, 30vh), 500px);width: max(max(30vw, 30vh), 500px);position: absolute;animation-fill-mode: both;border-radius: max(30vw, 30vh);}#particle-box {position: absolute;top: 0;left: 0;width: 100%;height: 100%;z-index: 1;overflow-x: hidden;overflow-y: hidden;animation-name: anim-box;animation-duration: 30s;animation-iteration-count: infinite;animation-timing-function: linear;}@keyframes anim-box {0% {filter: hue-rotate(0deg) blur(max(max(5vw, 5vh), 100px));}100% {filter: hue-rotate(359deg) blur(max(max(5vw, 5vh), 100px));}}