chromium/third_party/blink/web_tests/printing/multicol-2-pages.html

<!DOCTYPE html>
<script>
if (window.testRunner)
    testRunner.setPrinting();
if (window.internals)
    internals.settings.setShouldPrintBackgrounds(true);
</script>
<!-- TODO(mstensho): Try to come up with something that doesn't make assumptions about page
     height. Currently, there's no way of specifying it for layout tests. This test currently
     assumes that 4 lines will fit in each column on the first page, and the remaining ones on the
     next page. -->
<p>There should be three columns in this document - on this page, and on the next page. The numbers
    should be in ascending order when reading columns from left to right, page by page.</p>
<div style="-webkit-columns:3; -webkit-column-gap:11px; -webkit-column-rule:3px solid hotpink; width:622px; font-size:112px; background:papayawhip;">
    01<br>
    02<br>
    03<br>
    04<br>
    05<br>
    06<br>
    07<br>
    08<br>
    09<br>
    10<br>
    11<br>
    12<br>
    13<br>
    14<br>
    15<br>
    16<br>
    17<br>
    18<br>
    19<br>
    20<br>
    21<br>
    22<br>
    23<br>
</div>