body{margin:0;padding:0;font-family:sans-serif;background:linear-gradient(#141e30,#243b55);min-height:100vh;display:flex;align-items:center;justify-content:center}.login-box{width:400px;padding:40px;background:rgba(0,0,0,.5);box-sizing:border-box;box-shadow:0 15px 25px rgba(0,0,0,.6);border-radius:10px}.login-box h2{margin:0 0 30px;padding:0;color:#fff;text-align:center}.login-box .user-box{position:relative}.login-box .user-box input{width:100%;padding:10px 0;font-size:16px;color:#fff;margin-bottom:30px;border:none;border-bottom:1px solid #fff;outline:0;background:0 0}.login-box .user-box label{position:absolute;top:0;left:0;padding:10px 0;font-size:16px;color:#fff;pointer-events:none;transition:.5s}.float-label{top:-20px!important;left:0!important;color:#03e9f4!important;font-size:12px!important}.login-box form a{position:relative;display:inline-block;padding:10px 20px;color:#03e9f4;font-size:16px;text-decoration:none;text-transform:uppercase;overflow:hidden;transition:.5s;margin-top:40px;letter-spacing:4px}.login-box a:hover{background:#03e9f4;color:#fff;border-radius:5px;box-shadow:0 0 5px #03e9f4,0 0 25px #03e9f4,0 0 50px #03e9f4,0 0 100px #03e9f4;cursor:pointer}.login-box a span{position:absolute;display:block}.login-box a span:first-child{top:0;left:-100%;width:100%;height:2px;background:linear-gradient(90deg,transparent,#03e9f4);animation:btn-anim1 1s linear infinite}@keyframes btn-anim1{0%{left:-100%}100%,50%{left:100%}}.login-box a span:nth-child(2){top:-100%;right:0;width:2px;height:100%;background:linear-gradient(180deg,transparent,#03e9f4);animation:btn-anim2 1s linear infinite;animation-delay:.25s}@keyframes btn-anim2{0%{top:-100%}100%,50%{top:100%}}.login-box a span:nth-child(3){bottom:0;right:-100%;width:100%;height:2px;background:linear-gradient(270deg,transparent,#03e9f4);animation:btn-anim3 1s linear infinite;animation-delay:.5s}@keyframes btn-anim3{0%{right:-100%}100%,50%{right:100%}}.login-box a span:nth-child(4){bottom:-100%;left:0;width:2px;height:100%;background:linear-gradient(360deg,transparent,#03e9f4);animation:btn-anim4 1s linear infinite;animation-delay:.75s}@keyframes btn-anim4{0%{bottom:-100%}100%,50%{bottom:100%}}