Why does CSS need to set minimum width and maximum width, and what is the minimum width and maximum width?

Set minimum and maximum width, mainly to prevent page deformation
For example, if the width of a page is set to a percentage, then the width of the page depends on the width of the browser
However, if the width of the browser is too small, the page will deform, for example,
You do a percentage set of pages, and the browser window width of the client is reduced to 100px width (or the display resolution is too small)
So if you don't have a minimum width on your page, you can think about what your page will be like, but if you add one:
min-width:780px; The minimum width of the words
Then, when the browser width is 100px, your page will still be perfectly displayed without collapsing ...

Similarly, the maximum width of max-width is also true
Now most of the display is widescreen, if you do not want your page full screen or the interval between the modules is too large, you can add a maximum width to limit.

Above......

Why does CSS need to set minimum width and maximum width, and what is the minimum width and maximum width?