.bg-gradient{position:relative}.bg-gradient:before,.bg-gradient:after{content:"";z-index:-1;background:linear-gradient(45deg,#fb0094,#00f,#0f0,#ff0,red,#fb0094,#00f,#0f0,#ff0,red) 0 0/400%;width:calc(100% + 4px);height:calc(100% + 4px);animation:20s linear infinite steam;position:absolute;top:-2px;left:-2px}@keyframes steam{0%{background-position:0 0}50%{background-position:400% 0}to{background-position:0 0}}.bg-gradient:after{filter:blur(50px)}