horizontal line and right way to code it in html, css

Question

I need to draw a horizontal line after some block, and I have three ways to do it:

1) Define a class h_line and add css features to it, like

<         


        

Answer 1

In HTML5, the

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tag defines a thematic break. In HTML 4.01, the

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tag represents a horizontal rule.

http://www.w3schools.com/tags/tag_hr.asp

So after definition, I would prefer

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