/* X card only: the content scrolls inside the iframe, independently of its document. */
html,body{
 height:100%;
 overflow:hidden;
 overscroll-behavior:none;
}
.x-reading-view{
 position:fixed;
 inset:0;
 height:100%;
 min-height:0;
 overflow-x:hidden;
 overflow-y:auto;
 overscroll-behavior:contain;
 touch-action:pan-y;
 -webkit-overflow-scrolling:touch;
}
/* The application retains its own scrolling while the page behind it stays still. */
body:has(.application-dialog[open]) .x-reading-view{overflow-y:hidden}