Why Does the Background Gradient Disappear When Using Absolutely Positioned Elements?

Understanding the Disappearance of Background Gradient with Absolute Positioning

When applying absolute positioning to an element, it is essential to ensure that there is adequate space for it within its container. In this instance, the issue arises when the height of the body element is insufficient to accommodate the absolutely positioned header.

The header, initially positioned at the midpoint of the screen using top: 50% and left: 50%, obscures the background gradient. This occurs because the header is placed on top of the gradient, resulting in its disappearance.

Resolving the Issue: Providing Height to the Body

To address this problem, it is crucial to provide a height to the body element. By introducing min-height: 100vh in the CSS, you guarantee that the body extends to the full height of the viewport. This ensures that there is enough space for the absolutely positioned header without interfering with the background gradient.

Here is the updated code that solves the issue:

<code class="css">body {
  background: linear-gradient(20deg, #B7B0F6, #B1D5F9);
  min-height: 100vh;
}</code>

With this modification, the background gradient will remain visible even with the header positioned absolutely. This method ensures both the desired centralization of the header and the preservation of the gradient.

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