.modal-backdrop {
    position: fixed;
    top:0; left:0;
    width:100vw; height:100vh;
    background: rgba(0,0,0,0.5);
    z-index: 9999;
  }
  .modal-container {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%,-50%);
    background: #fff;
    width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    padding: 1rem;
  }