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<!doctype html>
<!--
     Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/
-->
<title>Examples of 'row-rule-align' values.</title>
<style>
html,body {
  color:black; background-color:white; font:20px/1 monospace;
}

.grid {
  position: relative;
  display: inline-grid;
  grid-template-columns: 1ch 2ch 2ch;
  gap: 10px 30px;
  block-size: calc(2em + 30px);
  inline-size: calc(10ch + 30px);
  place-content: center;

  column-rule: 6px solid cyan;
  column-rule-extent: all-long;
  column-rule-lateral-inset-start: 20%;

  row-rule: 6px solid purple;
  row-rule-longitudinal-inset: 1px;

  border: 2px solid;
  margin-right: 15px;
  margin-bottom: 30px;
  background: lightgrey;
}

.test1 { row-rule-align: gap-center; }
.test2 { row-rule-align: gap gap-over; }
.test3 { row-rule-align: rule; }
.test4 { row-rule-align: rule-center; }
.test5 { row-rule-align: gap rule-over; }
.test6 { row-rule-align: gap-over gap; }

x {
  background: grey;
}
x:nth-child(3) {
  grid-row: span 2;
}

.grid::after {
  position: absolute;
  bottom: -1.5em;
  width: 400px;
  font-size: 10px;
  vertical-align: top;
  content: attr(test);
}
pre { font-size: 10px; }
</style>

<pre>Note that the row rules all have a 1px longitudinal inset
to separate the individual rule segments. ('rule-center',
for example, would otherwise look like one long rule)

Note also that the column rule is intentionally not centered in
the gap (to separate 'rule-center' from 'gap-center').
</pre>

<div class="grid test1"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x></div>
<div class="grid test2"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x></div><br>
<div class="grid test3"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x></div>
<div class="grid test4"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x></div><br>
<div class="grid test5"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x></div>
<div class="grid test6"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x></div><br>

<script>
window.onload = function() {
  [...document.querySelectorAll('div')].forEach(function(elm) {
    const cs = window.getComputedStyle(elm);
    elm.setAttribute("test", 
      "row-rule-align:" + cs.rowRuleAlign
    );
  });
}
</script>