/* Center the loader  border-top: 16px solid #3388cc; */
        #loader {
          position: absolute;
          left: 50%;
          top: 50%;
          z-index: 1000; 
          margin: -25px 0 0 -25px;
          border: 3px solid #f3f3f3;
          border-radius: 50%; 
          border-top: 3px solid #35c4f0;
          width: 50px;
          height: 50px;
          -webkit-animation: spin 1s linear infinite;
          animation: spin 1s linear infinite;
        }

        @-webkit-keyframes spin {
          0% { -webkit-transform: rotate(0deg); }
          100% { -webkit-transform: rotate(360deg); }
            }

            @keyframes spin {
          0% { transform: rotate(0deg); }
          100% { transform: rotate(360deg); }
            }

        /* Add animation to "page content" */
        .animate-bottom {
          position: relative;
          -webkit-animation-name: animatebottom;
          -webkit-animation-duration: 1s;
          animation-name: animatebottom;
          animation-duration: 1s
        }

        @-webkit-keyframes animatebottom {
            from { bottom:-100px; opacity:0 }
            to { bottom:0px; opacity:1 }
        }

        @keyframes animatebottom {
            from{ bottom:-100px; opacity:0 }
            to{ bottom:0; opacity:1 }
        }

    #myDiv {
        display: none;
          text-align: center;
        }