Create an overlay that completely masks the height of a different element

Question

Create an overlay that completely masks the height of a different element

Having a variety of elements on my screen that require overlays, I find myself facing a challenge. These elements come in different sizes and can be resized while the page is active.

Although I managed to position overlays using CSS, the issue of 100% height not working has arisen:

.upgrade {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}

Is there a CSS solution that allows one element to fully cover another? If CSS isn't the answer, my backup plan involves using jQuery/JavaScript to set the initial height and monitor resize events. Is this the best approach to take?

I'm hopeful that the 100% height dilemma can be resolved through CSS. Any assistance you can provide would be greatly appreciated!

jquery css

Answer 1

Answer №1

To ensure an absolutely positioned element covers the correct area, nest it within the element it should cover in your HTML. Set the element you want to cover as position: relative;.

Next, update the CSS of the absolutely positioned element to:

.overlay {
   position: absolute;
   top: 0;
   left: 0;
   bottom: 0;
   right: 0;
}

Now, the absolutely positioned element will align itself according to the nearest parent with a relative position. This ensures that the top, bottom, left, and right values are relative to that specific element, rather than the entire document.

Additional Resources:

For more information on absolute positioning, visit MDN's guide. You can also read a helpful article on this topic from CSS-Tricks.

Answer 2

To ensure an absolutely positioned element covers the correct area, nest it within the element it should cover in your HTML. Set the element you want to cover as position: relative;.

Next, update the CSS of the absolutely positioned element to:

.overlay {
   position: absolute;
   top: 0;
   left: 0;
   bottom: 0;
   right: 0;
}

Now, the absolutely positioned element will align itself according to the nearest parent with a relative position. This ensures that the top, bottom, left, and right values are relative to that specific element, rather than the entire document.

Additional Resources:

For more information on absolute positioning, visit MDN's guide. You can also read a helpful article on this topic from CSS-Tricks.

Create an overlay that completely masks the height of a different element

Answer №1

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