body{font-family:Roboto,Helvetica,Arial,sans-serif}.loading{display:flex;justify-content:center;align-items:center;height:100vh}.loading-spinner{border:4px solid rgba(0,0,0,.3);border-top-color:#3498db;border-radius:50%;width:50px;height:50px;animation:spin 2s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}