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How to set the transparency of the border in css

青灯夜游

Apr 29, 2021 am 11:31 AM

cssframetransparency

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.

How to set the transparency of the border in css

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:

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <style type="text/css">
        	div{
        		border:10px solid;
        		margin: 10px 0;
        	}
        </style>
    </head>
    <body>
        <div style="border-color: rgba(0,153,0,0.1);">测试文本，透明度0.1</div>
        <div style="border-color: rgba(0,153,0,0.5);">测试文本，透明度0.5</div>
        <div style="border-color: rgba(0,153,0,0.8);">测试文本，透明度0.8</div>
        <div style="border-color: rgba(0,153,0,1.0);">测试文本，透明度1.0</div>
    </body>
</html>

Rendering:

How to set the transparency of the border in css

##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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