.overlay {
    visibility: hidden;
    opacity: 0;
    
    top: 0;
    background: rgba(0, 0, 0, 0.7);
    
  }
  .popup {
    margin: 70px auto;
    padding: 20px;
    background: #fff;
    border-radius: 5px;
    width: 30%;
    position: relative;
    transition: all 5s ease-in-out;
  }
  
  .popup h2 {
    margin-top: 0;
    color: #333;
    font-family: Tahoma, Arial, sans-serif;
  }
  .popup .close {
    position: absolute;
    top: 20px;
    right: 30px;
    transition: all 200ms;
    font-size: 30px;
    font-weight: bold;
    text-decoration: none;
    color: #333;
  }
  .popup .close:hover {
    cursor: pointer;
    color: #000;
  }
  .popup .content {
    max-height: 30%;
    overflow: auto;
  }
  
  @media screen and (max-width: 700px) {
    .popup {
      width: 70%;
    }
  }