.modal {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
  justify-content: center;
  align-items: center;
  z-index: 1000;
}
.modal-content {
  background: #fff;
  padding: 20px;
  border-radius: 6px;
  min-width: 300px;
  max-width: 600px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
   z-index: 9999;
}