.hidden {
    visibility: hidden;
  }
  .loader-overlay {
    position: absolute;
    width: 100%;
    z-index: 500000;
    top: 0;
  }
  .loader {
    height: 4px;
    width: 100%;
    position: relative;
    overflow: hidden;
    background-color: #FFF;
  }
  .loader:before {
    display: block;
    position: absolute;
    content: "";
    left: -200px;
    width: 200px;
    height: 4px;
    background-color: rgb(6, 176, 255);
    animation: loading 2s linear infinite;
  }
  @keyframes loading {
    from {left: -200px; width: 30%;}
    50% {width: 30%;}
    70% {width: 70%;}
    80% {left: 50%;}
    95% {left: 120%;}
    to {left: 100%;}
  }