Set a background color for all <ul> elements that are preceded by a <p> element with the same parent:
The element1~element2 selector matches occurrences of element2 that are preceded by element1.
Both elements must have the same parent, but element2 does not have to be immediately preceded by element1.
The numbers in the table specifies the first browser version that fully supports the selector.
Note: For this selector to work in IE8 and earlier, a <!DOCTYPE> must be declared.