What is the logic behind restricting the size of an element if there is enough empty place?

1. How are empty elements selected?
2. Which element must always have a specific With or they will expand to the size of the browser window in page layout?
3. Is used to set the minimum size of an element?
4. How do I make an empty div take up space?

How are empty elements selected?

The :empty selector matches every element that has no children (including text nodes).

Which element must always have a specific With or they will expand to the size of the browser window in page layout?

block elements with a width of auto (the default) will always expand to fill the entire width available to them.

Is used to set the minimum size of an element?

The min-width CSS property sets the minimum width of an element. It prevents the used value of the width property from becoming smaller than the value specified for min-width .

How do I make an empty div take up space?

Approach: The solution is to give some height (or min-height) and width (or min-width) to your HTML div. When you set a particular height and width for a div, it does not matter if it is empty or overflowed, it will only take up the space as given in the code.