Example Analysis of two practical attributes of CSS3 and Web Page making skills

Editor to share with you the two practical properties of CSS3 and web page making skills example analysis, I hope you will learn something after reading this article, let's discuss it together!

Two practical attributes of CSS3, as well as web page making skills

First, use: not () to apply / unapply borders on the menu

Two practical attributes of CSS3, as well as web page making skills

Our usual practice is to set a border for each menu item, and then set the border of the last menu to zero

But don't do this, use the: not () pseudo class to achieve the same effect:

Of course, you can also use .nav li + li or .nav li:first-child ~ li, but not () is clearer and readable

Use: nth-child (n) to select a project

(note: the subscript of the first child element is 1)

: nth-child (3) indicates the third element in the selection list

: nth-child (2n) represents an even number of tags in the list, that is, select 2nd, 4th, 6th. Label

: nth-child (2n-1) represents the odd tag in the selection list, that is, select 1st, 3rd, 5th, 7th... Label

: nth-child (nasty 3) indicates that the label in the selection list starts from the 3rd to the end (> = 3)

: nth-child (- naugh3) indicates that the tags in the selection list range from 0 to 3, that is, tags less than 3 (