/* Center the loader 
#loader {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    z-index: 1000000000 !important;
    margin: -75px 0 0 -75px;
    border: 16px solid #f3f3f3;
    border-radius: 50%;
    border-top: 16px solid #3498db;
    width: 120px;
    height: 120px;
    -webkit-animation: spin 2s linear infinite;
    animation: spin 2s linear infinite;    
  }
*/
 #loader {
    position: fixed;
    left: 50%;
    top: 40%;
    transform: translate(-50%,-50%);
    z-index: 1000000000 !important;
    margin: -75px 0 0 -75px;
    border: 16px solid #f3f3f3;
    border-radius: 50%;
    border-top: 16px solid #3498db;
    width: 120px;
    height: 120px;
    -webkit-animation: spin 2s linear infinite;
    animation: spin 2s linear infinite;    
}

/*
#loader {
    position: fixed;
    width: 120px;
    left: 50%;
    margin-left: -20%; 
    height: 120px;
    top: 50%;
    margin-top: -150px; 
    overflow: auto;

    border: 1px solid #000;
    background-color: #eee;
    padding: 1em;
    box-sizing: border-box;
}
*/  
  @-webkit-keyframes spin {
    0% { -webkit-transform: rotate(0deg); }
    100% { -webkit-transform: rotate(360deg); }
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  #mask {      
    position:absolute;  
    left:0;
    top:0;
    z-index:100000000 !important;  
    background-color:#000; 
    opacity: 0.65;
    filter: alpha(opacity=65);
  }
  
  .display-none { display: none !important; }