grid-masonry-001.html

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<title>Examples of 'column-rule-extent' values in a Masonry grid layout.</title>

<style>

.grid {

  position: relative;

  display: inline-grid;

  grid: masonry / 3ch 4ch 5ch;

  gap: 20px;

  margin-right: 20px;

  margin-bottom: 40px;

  background: lightgrey;

  block-size: 160px;

  align-content: center;

  column-rule: solid blue;

  column-rule-align: rule;

  column-rule-edge-align: gap-over;

  row-rule: 6px solid purple;

  row-rule-extent: all-long;

.segment { column-rule-extent: segment; }

.segment-allow-overlap { column-rule-extent: segment allow-overlap; }

.short-allow-overlap { column-rule-extent: short allow-overlap; }

.short { column-rule-extent: short; }

.long-allow-overlap { column-rule-extent: long allow-overlap; }

.long { column-rule-extent: long; }

.start { column-rule-extent: start; }

.end { column-rule-extent: end; }

.all-long-allow-overlap { column-rule-extent: all-long allow-overlap; }

.all-long { column-rule-extent: all-long; }

x {

  background: grey;

  opacity: 0.5;

x:nth-child(1) { padding-block-start: 30px; }

x:nth-child(2) { grid-column:span 2 }

x:nth-child(3) { padding-block-end: 20px;  }

x:nth-child(7) { grid-column: span 2;  }

x:nth-child(8) { padding-block-end: 10px;  }

.grid::after {

  position: absolute;

  bottom: -3em;

  font-size: 10px;

  font-style: italic;

  vertical-align: top;

  content: attr(test);

  white-space: pre;

pre { font-size: 10px; }

</style>

<pre>All have <i>'column-rule-edge-align: gap-over'</i> to extend

the edge rules out to the content-box edge.</pre>

<div class="grid short"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x><x>6</x><x>7</x><x>8</x></div>

<div class="grid long"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x><x>6</x><x>7</x><x>8</x></div><br>

<div class="grid start"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x><x>6</x><x>7</x><x>8</x></div>

<div class="grid end"><x>1</x><x>2</x><x>3</x><x>4</x><x>5</x><x>6</x><x>7</x><x>8</x></div><br>

<script>

window.onload = function() {

  [...document.querySelectorAll('.grid')].forEach(function(elm) {

    const cs = window.getComputedStyle(elm);

    elm.setAttribute("test",

      "'column-rule-extent: " + cs.columnRuleExtent + "' \n" +

      "'column-rule-align: " + cs.columnRuleAlign + "'"

);

});

</script>