body{background:linear-gradient(-45deg,#0d0d0e,#000,#202024,#151518,#000,#0d0d0e) 0 0/400% 400%;flex-direction:column;justify-content:center;align-items:center;width:100%;margin:0 auto;animation:30s infinite gradientFlow;display:flex}body img{width:500px;margin-top:60px}@keyframes gradientFlow{0%{background-position:0%}50%{background-position:100%}to{background-position:0%}}@media (width<=600px){body img{width:280px}}