The type and characteristics of CSS selectors

css selector
　　selector weight
　　in css, the right to choose which of their weights high, who left the style.
　　Tag selector weights are. 1
　　Class Selector a weight of 10
I D is the weight selector 100
　　weight pattern is a weight between 1000 lines
　　with keywords! css attribute weights imporant weight is infinite
weight calculation
　　selector above weights are superimposed, the sum of the superimposed is the sum of the weights of the selector
　　equally weighted when the latter overwrite the previous
type css selector
　　label weights 0001
　　class class weight is 0010
　　LD weight is 0100
　　wildcard representing all tags weight is 0000
　　descendant selector ap weights are cumulative 0011
　　progeny selector a> b weight is 0010
　　a # AS intersection selector
　　and diversity selector a, b
several forms Css of
　　1. the inter-row style is written in the style tag acts as a tag attribute value
　　2. inline style
　　3. outreach style
two characteristics Css selector
　　1. inherits all the attributes of the elements related to the quilt will be about the text font inheritance. And the weight is 0000
　　2. The stacked nature is to solve a major small capacity selector right, is to see that the right choice is important. Who's right major who to listen to. 0010 255 0001 equivalent