column-gap-decorations-012-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: 56px 128px 84px;

    gap: 10px;

    background: #cdd5e0;

    width: max-content;

  .lanes > div {

    height: 44px;

    background: #5b8def;

    color: #fff;

    font: 600 12px/1 sans-serif;

  .lanes > div.h2 { height: 66px; }

  .lanes > div.h3 { height: 52px; }

  .lanes > div.h4 { height: 80px; }

  .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="h2">1</div>

  <div class="h3">2</div>

  <div>3</div>

  <div class="h4">4</div>

  <div>5</div>

  <div class="h2">6</div>

  <div>7</div>

</div>

<div class="col-rule" style="left: 59px; top: 0; height: 152px;"></div>

<div class="col-rule" style="left: 197px; top: 0; height: 152px;"></div>

<div class="row-rule" style="top: 69px; left: 0; width: 56px;"></div>

<div class="row-rule" style="top: 55px; left: 66px; width: 128px;"></div>

<div class="row-rule" style="top: 47px; left: 204px; width: 84px;"></div>

<div class="row-rule" style="top: 101px; left: 204px; width: 84px;"></div>