column-gap-decorations-019-ref.html

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<!DOCTYPE html>

<link rel="author" title="Javier Contreras" href="mailto:javiercon@microsoft.com">

<link rel="help" href="https://drafts.csswg.org/css-gaps-1/">

<link rel="help" href="https://drafts.csswg.org/css-grid-3/">

<style>

  body { margin: 0; }

  .lanes {

    display: grid-lanes;

    grid-template-columns: repeat(3, 86px);

    gap: 10px;

    background: #cdd5e0;

    width: max-content;

  .lanes > div {

    background: #5b8def;

    color: #fff;

    font: 600 12px/1 sans-serif;

    text-align: center;

  .lanes > div.hi { background: #1f9d6b; }

  .lanes > div.i1 { height: 150px; }

  .lanes > div.i2 { height: 90px; }

  .lanes > div.i3 { height: 75px; }

  .lanes > div.i4 { grid-column: 1 / -1; height: 100px; }

  .lanes > div.i5 { grid-column: 1 / -1; height: 90px; }

  .col-rule { position: absolute; width: 0; border-left: 4px solid blue; }

  .row-rule { position: absolute; height: 0; border-top: 4px solid gold; }

</style>

<div class="lanes">

  <div class="i1">1</div>

  <div class="i2">2</div>

  <div class="i3">3</div>

  <div class="i4 hi">4 (span 3)</div>

  <div class="i5 hi">5 (span 3)</div>

</div>

<div class="col-rule" style="left: 89px; top: 0; height: 150px;"></div>

<div class="col-rule" style="left: 185px; top: 0; height: 150px;"></div>

<div class="row-rule" style="top: 153px; left: 0; width: 278px;"></div>

<div class="row-rule" style="top: 263px; left: 0; width: 278px;"></div>