.loader {
    align-items: center;
    margin: auto;
    border: rgba(0,0,0, 0.9);
    border-radius: 100%;
    border-top: 20px solid #e7e5ad;
    width: 200px;
    height: 200px;
    display: block;
    animation: spinner 2s linear infinite;
  }
  
  @keyframes spinner {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  .overlay {
    height: 100%;
    width: 100%;
    display: none;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0, 0.9);
  }
  
  .overlay-content {
    position: relative;
    top: 25%;
    width: 100%;
    text-align: center;
    margin-top: 30px;
  }
  
  @media screen and (max-height: 450px) {
    .overlay a {font-size: 20px}
    .overlay .closebtn {
    font-size: 40px;
    top: 15px;
    right: 35px;
    }
  }