.modalBox {
    display: none; 
    position: fixed; 
    z-index: 2;
    padding-top: 70px;
    left: 0;
    top: 0;
    width: 100%; 
    height: calc(100vh - 70px);
    overflow: auto; 
    background-color: rgba(0,0,0,0.4); 
  }
  

  @-webkit-keyframes animatetop {
    from {top:-300px; opacity:0} 
    to {top:0; opacity:1}
  }
  
  @keyframes animatetop {
    from {top:-300px; opacity:0}
    to {top:0; opacity:1}
  }
  

  .close {
    color: white;
    float: right;
    font-size: 28px;
    font-weight: bold;
    z-index:5000;
  }
  
  .close:hover,
  .close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
  }
  
@media (min-width: 767px) and (max-height: 640px) {
  .modalBox {
    padding-top:20px;
    height: calc(100vh - 20px);
  }
}