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;padding:1em;background:#fff;color:#000;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)}._dialog_overlay{position:fixed;top:0;right:0;bottom:0;left:0}