.modal {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.6);
}

.modal-content {
  background-color: #fff;
  margin: 15% auto;
  padding: 20px;
  border-radius: 10px;
  width: 80%;
  max-width: 400px;
  position: relative;
  text-align: center;
}

.close-button {
  color: #aaa;
  float: right;
  font-size: 28px;
  cursor: pointer;
}

.close-button:hover {
  color: #000;
}