The method of adding four edges and frames to CSS div

In this article, the editor introduces in detail the method of "CSS div plus four edges plus borders", with detailed content, clear steps and proper handling of details. I hope that this "CSS div plus four sides plus borders" article can help you solve your doubts.

Div plus four sides plus border

1. Use css words and values

Border:1px solid # F00

Configure the object border to be red

2. The complete small instance code of div:

Www.CSS5.com.cn. A-4 {border:1px solid # F00} is red on all sides.

Screenshot of an example:

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