.blood-animation{background:radial-gradient(circle,rgba(255,0,0,.2) 20%,transparent 70%);background-size:400% 400%;animation:bloodFlow 6s ease-in-out infinite;filter:blur(60px)}@keyframes bloodFlow{0%{background-position:0 50%}50%{background-position:100% 50%}to{background-position:0 50%}}