CSS | stroke-opacity Property
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"> <!-- Strokes lines--> <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"> <!-- Strokes lines--> <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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