What is the mechanism behind the functionality of padding percentage?

HTML

<div class='container'>
    <div class='boxContainer'>
        The text inside this box should be centered vertically
    </div>
</div>

CSS

.container
{
    position: relative;

    height: 300px;
    width: 400px;

    background: lightblue;
    border: 2px solid black;
}

.boxContainer
{
    position: relative;
    height: 200px;
    width: 300px;

    padding-top: 50%;

    background: orange;
}

Example link:

In the demonstration provided, .boxContainer has a padding-top of 50%. This padding should be based on the height of the parent element (.container), resulting in 150px. However, it actually renders as 200px. What could be causing this discrepancy?

Answer №1

The guidelines provide an explanation.

<percentage>
The percentage is calculated based on the width of the container block for the generated box.

If you have 400 units, then 50% equals 200 units.

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