But take note, the percentage is calculated based on the parent container. % Percentage, one that I will recommend using with today’s responsive design and to better support mobile screens.px Pixels, good for specifying an exact size for an overlay with an image or video.Need to set the dimensions of an overlay? Well, there are a lot of confusing measurement units in CSS, but here are a few common ones to know: Overlapping happens when we position one element over another. In summary – relative absolute fixed sticky will “disrupt” HTML elements from their “usual layout”, and we can control it using top bottom left right. But as it scrolls out of the screen, it turns into position: fixed instead. Sticky – An interesting one, the element acts like position: static by default.Fixed – The element will be fixed on the screen and cannot be “scrolled away”.Absolute – The element will be positioned with reference to an ancestor that is not position: static Will be positioned with reference to if all ancestors are position: static.Relative – The element will be “displaced” from its static position, we use top bottom left right to define how much to offset the element.Static – This is the default “as-it-is” positioning for every element The element will simply go along with the “normal page flow”.
In CSS, there are a couple of ways to position an element:
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