#header-container{display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(45deg,#e0db80,#e57737);background-size:150% 150%;animation:header-background 3s ease-in-out infinite alternate}@keyframes header-background{0%{background-position:10% 10%}to{background-position:90% 90%}}