.rainbow-background{animation:create-rainbow-gradient-shift 5s linear infinite;background:linear-gradient(90deg,#f4231f,#f80 11%,#ffd900,#d3eb00,#96ee2b 44%,#4aed6b 56%,#00e6ac,#00dbd4,#00b7fa 89%,#008cff);background-size:350% 100%}@keyframes create-rainbow-gradient-shift{0%{background-position:100% 50%}to{background-position:0 100%}}