.kbr-modal-container {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 9999;
  display: none;
}
.kbr-popup-content {
  position: relative;
  margin: 5% auto;
  background: #fff;
  padding: 2rem;
  width: 90%;
  max-width: 600px;
  border-radius: 8px;
}
.kbr-close-button {
  position: absolute;
  top: 10px; right: 15px;
  font-size: 24px;
  cursor: pointer;
}