dialog {
  position: absolute;
  left: 0;
  right: 0;
  width: -moz-fit-content;
  width: -webkit-fit-content;
  width: fit-content;
  height: -moz-fit-content;
  height: -webkit-fit-content;
  height: fit-content;
  margin: auto;
  border: solid;
  padding: 1em;
  background: white;
  color: black;
  display: block; }

dialog:not([open]) {
  display: none; }

dialog + .backdrop {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: rgba(0, 0, 0, 0.1); }

._dialog_overlay {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0; }

dialog.fixed {
  position: fixed;
  top: 50%;
  transform: translate(0, -50%); }