.error{margin:0;padding:0;overflow:hidden;background:linear-gradient(135deg,#e0e0e0,#00bfff,#e0e0e0);background-size:400% 400%;-webkit-animation:gradient 15s linear infinite;animation:gradient 15s linear infinite;display:flex;align-items:center;justify-content:center;height:100vh;position:relative}.foot{position:absolute;bottom:0;text-align:center}h1{font-size:100px;text-shadow:3px 3px 6px rgba(0,0,0,.2);margin:0}h1,p{color:#fff}p{font-size:36px;text-shadow:2px 2px 4px rgba(0,0,0,.2);margin:20px 0}a{text-decoration:none;color:#fff;font-size:24px;border:2px solid #fff;padding:10px 20px;border-radius:5px;transition:background .3s ease,color .3s ease}a:hover{background:#fff;color:#333}button{text-decoration:none;color:#fff;font-size:24px;border:2px solid #fff;padding:10px 20px;border-radius:5px;background:none}@-webkit-keyframes gradient{0%{background-position:0 50%}to{background-position:100% 50%}}@keyframes gradient{0%{background-position:0 50%}to{background-position:100% 50%}}