dialog{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:#fff;color:#000;display:block}dialog:not([open]){display:none}dialog+.backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:rgb(0 0 0 / .66)}dialog.polyfilled{position:fixed;right:unset;left:50%;top:50%;transform:translate(-50%,-50%)}._dialog_overlay{position:fixed;top:0;right:0;bottom:0;left:0}dialog.fixed{position:fixed;top:50%;transform:translate(0,-50%)}