1 + x substantially certificate selector learning log --css

## CSS Selectors

                1: Type selectors directly as a tag name selector

                    Features: Select all similar elements

 

                2: id name <label id = "Name"> </ tab>

                    #name{}

 

                    Features: Uniqueness

                    Role: id divided pages peripheral structure

 

                3: class name (class name)

                    <Tag class = "Name 1 Name 2"> </ tab>

                    .name{}

                4: comprising a selector (selector progeny sub) section div {}

                    By looking for child elements of the parent element

                5: a group selector

                    The combined into a single set of selectors write pattern

                        1 selectors, selectors 2, ........ selector {3}

                6: Wildcards (wildcards are rarely used in practice, but the massive elements are written in)

                    *{}

                    Select all of the elements of the page

 

                    *{margin:0;padding:0;}

                7: pseudo-class

                    Selector: hover {}

                    When the mouse rolls over, the style is changed

 

　　　　　　: Target URL used to specify that the target element is a fragment identifier style