#loader {
   position: absolute;
   left: 50%;
   top: 50%;
   z-index: 1;
   width: 120px;
   height: 120px;
   margin: -76px 0 0 -76px;
   border: 16px solid #f3f3f3;
   border-radius: 50%;
   border-top: 16px solid #3498db;
   -webkit-animation: spin 2s linear infinite;
   animation: spin 2s 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;
}