._dash-loading-callback {
    font-family: sans-serif;
    padding-top: 50px;
    color: rgb(90, 90, 90);
  
    -webkit-animation: fadein 0.5s ease-in 7s forwards; /* Safari, Chrome and Opera > 12.1 */
       -moz-animation: fadein 0.5s; /* Firefox < 16 */
        -ms-animation: fadein 0.5s; /* Internet Explorer */
         -o-animation: fadein 0.5s; /* Opera < 12.1 */
            animation: fadein 0.5s ease-in 7s forwards;  
  
  
    
    /* The banner */
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.5);
    text-align: center;
    cursor: progress;
  }
  
  
  @keyframes fadein {
      from { opacity: 0; }
      to   { opacity: 1; }
  }
  
  /* Firefox < 16 */
  @-moz-keyframes fadein {
      from { opacity: 0; }
      to   { opacity: 1; }
  }
  
  /* Safari, Chrome and Opera > 12.1 */
  @-webkit-keyframes fadein {
      from { opacity: 0; }
      to   { opacity: 1; }
  }
  
  /* Internet Explorer */
  @-ms-keyframes fadein {
      from { opacity: 0; }
      to   { opacity: 1; }
  }
  
  /* Opera < 12.1 */
  @-o-keyframes fadein {
      from { opacity: 0; }
      to   { opacity: 1; }
  }