.spinner-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    padding-top: 40px;
    background: #e4e4e4;
    z-index: 9999;
  }
  #y {
    border: 4px solid #fff;
    border-top: 4px solid #e4e4e4;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: x 1s linear infinite;
  }
  @keyframes x {
    0%   { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }

  #form {
    display: none;
    opacity: 0;
    transition: opacity 0.8s ease;
  }
  #form.show {
    display: block;
    opacity: 1;
  }