CSS opacity not working in IE11
CSS Opacity Not Working in IE11
In this article, we’ll explain the issue of CSS opacity not working in IE11 and provide solutions and examples.
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Problem Description
In Internet Explorer 11, using the CSS opacity property to set the opacity of an element often does not work. This can cause pages to display incorrectly in IE11, affecting the website’s user experience.
Solution
To resolve the issue of CSS opacity not working in IE11, we can use the filter property instead of opacity.
In IE, you can use the filter property and the alpha(opacity=value) function to set the opacity of an element.
The sample code is as follows:
.element {
opacity: 0.5;
filter: alpha(opacity=50);
}
In the sample code above, the element’s opacity is set to 0.5. At the same time, the filter property and the alpha(opacity=50) function are used to achieve the transparency effect in IE11.
Compatibility Considerations
While using the filter property can resolve the issue of CSS opacity not working in IE11, compatibility considerations are important.
Since the filter property is specific to IE, you need to ensure it doesn’t affect the display in other browsers. To achieve this, you can use a CSS hack to customize the settings for different browsers.
Sample code is as follows:
/* For IE11 and below */
@media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) {
.element {
filter: alpha(opacity=50);
}
}
/* For other browsers */
.element {
opacity: 0.5;
}
In the example code above, the @media query and the -ms-high-contrast property are used to set the filter property for IE11 and earlier. The opacity property is used for other browsers.
Example Description
To better understand the problem of CSS opacity not working in IE11 and the solution, the following example illustrates the problem.
<!DOCTYPE html>
<html>
<head>
<style>
.element {
width: 200px;
height: 200px;
background-color: red;
opacity: 0.5;
filter: alpha(opacity=50);
}
</style>
</head>
<body>
<div class="element"></div>
</body>
</html>
In the example above, we define a red square element with a width and height of 200px and set its opacity to 0.5. Furthermore, by using the filter property and the alpha(opacity=50) function, we achieve a transparent effect in IE11.
Summary
By using the filter property and the alpha(opacity=value) function, we can resolve the issue where CSS opacity doesn’t work in IE11. We also need to consider compatibility and use the appropriate CSS hacks to ensure the effect displays correctly across browsers.
We hope this article helps resolve the issue of CSS opacity not working in IE11!