._dialog_overlay,dialog+.backdrop{position:fixed;top:0;right:0;bottom:0;left:0}dialog{position:absolute;right:0;left:0;display:block;width:-moz-fit-content;width:-webkit-fit-content;width:fit-content;height:-moz-fit-content;height:-webkit-fit-content;height:fit-content;padding:1em;border:solid;margin:auto;background:#fff;color:#000}dialog:not([open]){display:none}dialog+.backdrop{background:rgba(0,0,0,.1)}dialog.fixed{position:fixed;top:50%;transform:translate(0,-50%)}