.loader_background {
    width:100%;
    height:100%;
    background-color: #000;
    z-index: 0;
    position: fixed;
  }

  .loader_container {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    margin-left: -20px;
    margin-top: -20px;
  }
  .loader {
    border: 5px solid #f3f3f3;
    border-radius: 50%;
    border-top: 5px solid #ff6600;
    width: 30px;
    height: 30px;
    -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); }
  }