Why Isn't My CSS 'top: 50%' Property Working?

CSS Top Percent Property Not Functioning

When attempting to implement a responsive CSS layout, it is observed that the "top: 50%" property is not functioning as intended, while the "left: 50%" property is working. This issue arises because the "top" property requires a reference parent element with a defined height.

<div>

To resolve this issue, there are two potential solutions:

1. Define a Dimension for the Parent Container:

   Provide a specific height and width for the parent container, ensuring it has a defined area for the child element to be positioned.

   <div>

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2. Stretch the Parent Container:

   Alternatively, the parent container can be stretched using the "top," "bottom," "left," and "right" properties. This provides the child element with a reference area for its "top" positioning.

   <div>

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