How to set the transparency of the border in css

In css, you can set the border transparency through the border-color attribute and the RGBA() function. Just add the "border-color: rgba (red, green, blue, transparency value)" style to the border element. border-color can set the border color, and RGBA() can set the color transparency.

The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 version, Dell G3 computer.

css sets the transparency of the border

In css, the border transparency can be set through the border-color attribute and the RGBA() function.

Code example:

     
  
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##Description:

border-color attribute can Set the border color, and the RGBA() function can set the color transparency.

RGBA means (Red-Green-Blue-Alpha) which is an extension of RGB to include the "alpha" channel, which allows you to set transparency on color values.

Syntax:

rgba（R,G,B,A）;

Introduction to the values in rgba():

• R: red value. Positive integer (0~255)

• G: green value. Positive integer (0~255)

• B: Blue value. Positive integer (0~255)

• A: Transparency. The value is between 0 and 1

(Learning video sharing:

css video tutorial)

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