CodePen Embed - xvKMZx

<div class="foo">
    <div class="bar"></div>
</div>

        div {
            width: 100px;
            height: 100px;
            margin: 100px;
        }

        .foo {
            background: skyblue;
        }

        .bar {
            background: palevioletred;
        }

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