When using a number of style sheets, the need for a specific style sheet selectors control. Under these circumstances, there would always be a style sheet rules to control access. The following features will be decided at odds with each other style sheets.

! Important
Rules can be specified! Important for the specific. An important reference for the style will prevail over confrontation with the other styles of the same weight. Similarly, when the production of pages and readers have designated an important rule, the producers of pages of rules would go beyond the readers. The following is! Important statement of the case:

BODY (background: url (bar.gif) white;
background-repeat: repeat-x! important)
Origin of Rules (Author’s vs. Reader’s)
As previously mentioned, the production of pages and readers have the ability to specify style sheets. When the conflict between the rules, producers of the page will override the rules of other readers of the same weight rules. The web pages creators and the readers of the style sheets are beyond the browser’s built-in style sheet.

Producers of the page should be used carefully! Important rules, as they will go beyond any user! Important rules. For example, a user because of the relationship between vision will require large font or color specified, and such users may be determined by the style statement for the rules! Important, because these styles for users to read the page is of the utmost importance. Any! Important rules will go beyond a general rule, it is proposed to use the web in general the rules to ensure that the special needs of the style of web users to read.

Selectors rule: computing features
Based on the characteristics of their level, style sheets can also go beyond the conflict with the style sheet, a high characteristic style is always above the characteristics of a low style. It is simply calculating the selectors appointed a number of statistics of the game.

Statistics selectors in the ID number of attributes.
Statistics CLASS selectors in the number of attributes.
Statistics selectors in the name of the HTML tag format.
Finally, in accordance with the correct order to write the three figures do not add a comma or a space, a three-digit. (Note that you need to figure into a number three at the end of the greater number.) Corresponds to the number of choices at the end of the list can be easily identified a higher number of properties above the lower figure. The following is a classification according to the characteristics of the site selection list:

# id1 (xxx) / * a = 1 b = 0 c = 0 -> = 100 properties * /
UL UL LI.red (xxx) / * a = 0 b = 1 c = 3 -> = 013 properties * /
LI.red (xxx) / * a = 0 b = 1 c = 1 -> properties = 011 * /
LI (xxx) / * a = 0 b = 0 c = 1 -> properties = 001 * /
Characteristics of the order
In order to facilitate the use, when the two rules with the same weight, get behind that.