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This article mainly introduces how to create rounded corners in css3, which has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

In css3, the "border-radius" attribute is used to create fillets, which is an abbreviated attribute that can be used to style four fillets of an element with the syntax "border-radius: 1-4 length |% / 1-4 length |%".

The operating environment of this tutorial: windows10 system, CSS3&&HTML5 version, Dell G3 computer.

First, set the fillet border, mainly using the CSS3 property border-radius property to define the fillet effect. The specific syntax is as follows:

{border-raidus: none | length | length;} where parameter none is the default value, which means there is no fillet effect; parameter length is a length value composed of a floating point number and a unit identifier, which cannot be negative.

Second, specify two fillet radii. The border-radius property can contain two parameter values: the first parameter value represents the horizontal radius of the fillet, and the second parameter represents the vertical radius of the fillet, separated by a slash (/).

Third, draw rounded borders with four different corners. Border-radius can draw rounded borders with four different corners, the syntax is as follows:

{border-radius: top-left | top-right | bottom-right | bottom-left;} the parameters represent the upper left corner fillet radius, upper right corner fillet radius, lower right corner fillet radius and lower left corner fillet radius, respectively.

Fourth, draw a circular border. The border-radius property can draw different fillet borders or regular circles according to different radius values.

Developers can set the size of border-radius according to their own needs.

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