/* Make the iframe fill the window content area for Excel */
.window__templerun .templerun__iframe {
  position: absolute;   /* anchor to the window body */
  inset: 0;             /* top/right/bottom/left: 0 in one line */
  width: 100%;
  height: 100%;
  border: 0;
  display: block;       /* avoid inline gaps */
  background: #000;     /* optional: hide loading edges */
}