#loader {
            width: 70px;
            height: 70px;
        }
 
        .center {
            position: absolute;
            top: 0;
            bottom: 0;
            left: 0;
            right: 0;
            margin: auto;
        }
 
        @keyframes spin {
            100% {
                transform: rotate(360deg);
            }
        }