<div class="red"></div>
<div class="blue"></div>


    .red, .blue {
      width: 100px;
      height: 100px;
    }

    .red {
      background-color: red;
      position: relative;
      anchor-name: --red;
    }

    .blue {
      background-color: blue;
      position: absolute;
      top: anchor(--red bottom);
      left: anchor(--red right);
    }

External CSS

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External JavaScript

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