CSS position: sticky behaves like fixed (within w3. css modal) The problem is the the w3-modal has a fixed position and a 100px padding-top It never leaves the screen And it has a padding-top of 100px Your modalclose is already sticky and working fine Try removing the position fixed of the w3-modal class
Proper way to make HTML nested list? - Stack Overflow The W3 docs have a nested list example prefixed by DEPRECATED EXAMPLE:, but they never corrected it with a non-deprecated example, nor explained exactly what is wrong with the example So which of these ways is the correct way to write an HTML list?