row-gap-decorations-011-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-rows: repeat(4, 64px);

    gap: 10px;

    background: #cdd5e0;

    width: max-content;

  .lanes > div {

    width: 48px;

    background: #5b8def;

    color: #fff;

    font: 600 12px/1 sans-serif;

  .lanes > div.alt { background: #8a6df0; }

  .row1 { grid-row: 1; }

  .row2 { grid-row: 2; }

  .row4 { grid-row: 4; }

  .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="row1">1</div>

  <div class="row2 alt">2</div>

  <div class="row4">3</div>

  <div class="row1">4</div>

  <div class="row2 alt">5</div>

  <div class="row4">6</div>

</div>

<div class="col-rule" style="left: 51px; top: 0; height: 64px;"></div>

<div class="col-rule" style="left: 51px; top: 74px; height: 64px;"></div>

<div class="col-rule" style="left: 51px; top: 222px; height: 64px;"></div>

<div class="row-rule" style="top: 67px; left: 0; width: 106px;"></div>

<div class="row-rule" style="top: 141px; left: 0; width: 106px;"></div>

<div class="row-rule" style="top: 215px; left: 0; width: 106px;"></div>