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+<!DOCTYPE html>
+<!-- This is a reference case for a "4-pages-per-sheet" scenario. This file is
+ a mockup of a sheet with 4 pages, with the pages all having a 0.4x scale
+ scale factor applied. (We end up with that scale factor by subtracting the
+ requested unwriteable margins from the sheet, and dividing up the
+ remaining space equally among the "virtual pages".) -->
+<style>
+html {
+ display: flex;
+ height: 100%;
+ margin: 0;
+}
+body {
+ /* As a flex item (a child of the html element), fill the available area. */
+ flex: 1;
+
+ /* We lay out the body as a column-oriented flex container (whose children,
+ in turn, are rows). */
+ display: flex;
+ flex-direction: column;
+
+ /* These values come directly from the unwriteableMargin values in the
+ testcase's configuration code in printpreview_helper.xhtml. */
+ margin-top: 0.6in;
+ margin-right: 0.1in;
+ margin-bottom: 0.4in;
+ margin-left: 0.3in;
+}
+
+.row {
+ /* Give each row an equal share of the available height: */
+ flex: 1;
+
+ /* ...and render them as row-oriented (by default) flex containers: */
+ display: flex;
+}
+
+.swatch {
+ box-sizing: border-box;
+
+ /* These represent the 120px borders in the testcase, scaled down 0.4x: */
+ border: 48px solid;
+
+ /* Share the width equally among the swatches. (The height will be
+ automatically set to the flex container's row height, via default
+ 'align-self' behavior.) */
+ flex: 1;
+
+ /* These values come directly from the unwriteableMargin values in the
+ testcase's configuration code in printpreview_helper.xhtml, with
+ each measurement scaled down by exactly 0.4x. The extra 0.1in accounts
+ for the centering of each page in its grid cell. */
+ margin-top: 0.24in;
+ margin-right: calc(0.04in + 0.1in);
+ margin-bottom: 0.16in;
+ margin-left: calc(0.12in + 0.1in);
+}
+.row:nth-child(1) > .swatch:nth-child(1) { border-color: cyan; }
+.row:nth-child(1) > .swatch:nth-child(2) { border-color: yellow; }
+.row:nth-child(2) > .swatch:nth-child(1) { border-color: pink; }
+.row:nth-child(2) > .swatch:nth-child(2) { border-color: orange; }
+</style>
+<div class="row">
+ <div class="swatch"></div>
+ <div class="swatch"></div>
+</div>
+<div class="row">
+ <div class="swatch"></div>
+ <div class="swatch"></div>
+</div>