Two or more css Rules applied to the same text, these rules may be in conflict and produce unexpected results.    Browser CSS according to the following rules apply: 

•   If the two rules will be applied to the same text, the browser displays this all the attributes of the two rules, unless a particular attribute conflict.    For example, a rule may be designated for the text Color blue, while another may be designated by the rules of the text color is red. 
•   If applied to the same rules of the two text attributes conflict, the browser displays the inside rules (from the text of the recent rules) attributes.    Therefore, if Waibuyangshibiao and in the form of text elements affecting, in the application form. 
•   If there is a direct conflict, since the definition of CSS rules (using the class attribute of the application of the rules), will cover the properties of html tags in the form of attributes. 

  In the following example, the definition of style for the h1 all h1 paragraphs can specify the font, size and color, but applied to the paragraph custom CSS rules. Blue will cover h1 style in the color settings.    Another custom CSS rules. Red will cover. Blue because it. Blue style interior. 

  <h1> <span Class="Blue"> This paragraph is controlled by the. Blue custom style and h1 HTML tag style. <span Class="Red"> Except this sentence is controlled by the. Red style. </ Span> Now we're back to the. Blue style. </ span> </ h1> 

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