.loader {
            border: 16px solid #f3f3f3;
            border-radius: 50%;
            border-top: 16px solid #3498db;
            width: 60px;
            height: 60px;
            -webkit-animation: spin 2s linear infinite;
            /* Safari */
            animation: spin 2s linear infinite;

        }

        /* Safari */
        @-webkit-keyframes spin {
            0% {
                -webkit-transform: rotate(0deg);
            }

            100% {
                -webkit-transform: rotate(360deg);
            }
        }

        @keyframes spin {
            0% {
                transform: rotate(0deg);
            }

            100% {
                transform: rotate(360deg);
            }
        }