.modal {
    text-align: left;
  }
  
  .modal-backdrop  {
    background-color: #ffffff;
  }
  
  .modal-backdrop.in {
    opacity: 1;
  }
  
  .modal-content {
    border-radius: 8px;
    border: none;
    box-shadow: none;
    margin: 0 6px;
  }
  
  .modal-dialog {
    position: absolute;
    margin: 0;
    top: 50%;
    left: 50%;
    }

  .modal.fade .modal-dialog {
    -webkit-transform: translate(-50%, -75%);
    -ms-transform: translate(-50%, -75%);
    transform: translate(-50%, -75%);
    -webkit-transition: all .3s ease-in-out;
    transition: all .3s ease-in-out;
    opacity: .2;
  }

  .modal.in .modal-dialog {
    -webkit-transform: translate(-50%,-50%);
    -ms-transform: translate(-50%,-50%);
    transform: translate(-50%,-50%);
    opacity: 1;
  }
    
  
  .modal-sm {
    width: 100%;
    max-width: 400px;
  }