Blitz - WPT: position-area-chain-pseudo-elements.html

wpt / css / css-anchor-position / position-area-chain-pseudo-elements.html

/css/css-anchor-position/position-area-chain-pseudo-elements.html

<!DOCTYPE html>

<title>Tests that chain of pseudo-elements that anchor to each other using position-area works</title>

<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#position-area">
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#determining">
<link rel="author" title="Kiet Ho" href="mailto:kiet.ho@apple.com">
<link rel="match" href="reference/pseudo-element-chain-ref.html">

<style>
  .containing-block {
    border: 1px solid black;

    position: relative;
    width: 500px;
    height: 200px;
  }

  .box-after::after, .box-before::before {
    position: absolute;
    anchor-name: --box;
    position-area: center right;
    position-anchor: --box;

    width: 50px;
    height: 50px;
    content: "";
    border-right: 10px white solid;
  }

  /* Give both ::before and ::after background colors,
     so we can switch boxes between ::before and ::after. */
  #box1::before, #box1::after { background-color: #cce7cc; }
  #box2::before, #box2::after { background-color: #99cf99; }
  #box3::before, #box3::after { background-color: #66b866; }
  #box4::before, #box4::after { background-color: #33a033; }
  #box5::before, #box5::after { background-color: #008000; }
</style>

<p>You should see a row of five boxes in increasing gradient.</p>

<div class="containing-block">
  <div class="box-before" id="box1"></div>
  <div class="box-before" id="box2"></div>
  <div class="box-after" id="box3"></div>
  <div class="box-before" id="box4"></div>
  <div class="box-after" id="box5"></div>
</div>

/css/css-anchor-position/reference/pseudo-element-chain-ref.html

<!DOCTYPE html>

<style>
  .containing-block {
    border: 1px solid black;

    width: 500px;
    height: 200px;

    display: flex;
    flex-direction: row;
    gap: 10px;
  }

  .box {
    width: 50px;
    height: 50px;
  }

  #box1 { background-color: #cce7cc; }
  #box2 { background-color: #99cf99; }
  #box3 { background-color: #66b866; }
  #box4 { background-color: #33a033; }
  #box5 { background-color: #008000; }
</style>

<p>You should see a row of five boxes in increasing gradient.</p>

<div class="containing-block">
  <div class="box" id="box1"></div>
  <div class="box" id="box2"></div>
  <div class="box" id="box3"></div>
  <div class="box" id="box4"></div>
  <div class="box" id="box5"></div>
</div>