matsen-tool-fe/matsen-tool/src/assets/scss/_modal.scss

.modal {
  cursor: not-allowed;
}
.modal-dialog {
  margin-top: 3rem;
  margin-bottom: 3rem;
  cursor: auto;
}
.modal-content {
  padding: 1rem;
  &:before,
  &:after {
    content: "";
    display: block;
    width: 30px;
    height: 3px;
    position: absolute;
    right: 0;
    top: -30px;
    pointer-events: none;
    background: #fff;
    cursor: pointer;
  }
  &:before {
    transform: rotate(45deg);
  }
  &:after {
    transform: rotate(-45deg);
  }
}