CSS | stroke-opacity Property
Last Updated :
22 Nov, 2019
The stroke-opacity property is used to set the opacity of the color or pattern that is applied to the stroke of a shape. A decimal or percentage value could be used to make the stroke visible, invisible or semi-transparent.
Syntax:
stroke-opacity: [0-1] | <percentage>
Parameters: This property accepts two types of parameters as mentioned above and described below:
- [0-1]: It is used to set the opacity in a decimal value from 0 to 1. A value of 0 would mean that the stroke is completely transparent and invisible. A value of 1 means that the stroke is fully opaque and visible. A decimal value between these values two would give a semi-transparent stroke.
- percentage: This is used to set the opacity in a percentage values. A value of 0% would mean that the stroke is completely transparent and invisible. A value of 100% means that the stroke is fully opaque and visible. A percentage value between these two values would give a semi-transparent stroke.
Below examples will illustrates the stroke-opacity property in CSS:
Example 1: This example uses a value 0 to 1 to set the stroke opacity.
<!DOCTYPE html>
<html>
<head>
<title>
CSS | stroke-opacity property
</title>
<style>
.stroke1 {
/* completely visible stroke */
stroke-opacity: 1.0;
stroke: green;
stroke-width: 20px;
}
.stroke2 {
/* 50-50 visible transparent */
stroke-opacity: 0.5;
stroke: green;
stroke-width: 20px;
}
.stroke3 {
/* 25-75 visible transparent */
stroke-opacity: 0.25;
stroke: green;
stroke-width: 20px;
}
.stroke4 {
/* completely transparent stroke */
stroke-opacity: 0;
stroke: green;
stroke-width: 20px;
}
</style>
</head>
<body style="text-align:center;">
<h1 style="color: green">
GeeksforGeeks
</h1>
<b>
CSS | stroke-opacity
</b>
<div class="container">
<svg width="400px">
<line class="stroke1" x1="50"
x2="350" y1="20" y2="20" />
<line class="stroke2" x1="50"
x2="350" y1="70" y2="70" />
<line class="stroke3" x1="50"
x2="350" y1="120" y2="120" />
<line class="stroke4" x1="50"
x2="350" y1="170" y2="170" />
</svg>
</div>
</body>
</html>
|
Output:
Example 2: This example uses percentage value to set the stroke opacity.
<!DOCTYPE html>
<html>
<head>
<title>
CSS | stroke-opacity property
</title>
<style>
.stroke1 {
/* completely visible stroke */
stroke-opacity: 100%;
stroke: green;
stroke-width: 20px;
}
.stroke2 {
/* 50-50 visible transparent */
stroke-opacity: 50%;
stroke: green;
stroke-width: 20px;
}
.stroke3 {
/* 25-75 visible transparent */
stroke-opacity: 25%;
stroke: green;
stroke-width: 20px;
}
.stroke4 {
/* completely transparent stroke */
stroke-opacity: 0%;
stroke: green;
stroke-width: 20px;
}
</style>
</head>
<body style="text-align:center;">
<h1 style="color: green">
GeeksforGeeks
</h1>
<b>
CSS | stroke-opacity
</b>
<div class="container">
<svg width="400px">
<line class="stroke1" x1="50"
x2="350" y1="20" y2="20" />
<line class="stroke2" x1="50"
x2="350" y1="70" y2="70" />
<line class="stroke3" x1="50"
x2="350" y1="120" y2="120" />
<line class="stroke4" x1="50"
x2="350" y1="170" y2="170" />
</svg>
</div>
</body>
</html>
|
Output:
Supported Browsers: The browsers supported by CSS stroke-opacity property are listed below:
- Chrome
- Internet Explorer 9
- Firefox
- Safari
- Opera
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