How to set the contrast of an image in css: You can use the [filter:contrast(%)] attribute to set the contrast of an image, such as [filter:contrast(0%)]. The filter attribute defines the visual effect of the element, such as blur, saturation, contrast, etc.
Attribute introduction:
The filter attribute defines the visual effect (for example: blur and saturation) of the element (usually ) Spend).
(Learning video recommendation: css video tutorial)
Syntax:
filter: none | blur() | brightness() | contrast() | drop-shadow() | grayscale() | hue-rotate() | invert() | opacity() | saturate() | sepia() | url();
contrast(%) Adjust the contrast of the image. If the value is 0%, the image will be completely black. The value is 100% and the image is unchanged. Values can exceed 100%, meaning a lower comparison will be used. If no value is set, the default is 1.
Example:
<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8">
<style type="text/css">
img{
width: 200px;
}
.img1{
/*没有滤镜效果*/
/*考虑浏览器兼容性：兼容 Chrome, Safari, Opera */
-webkit-filter: none;
filter: none;
}
.img2{
/*调整元素的对比度*/
/*考虑浏览器兼容性：兼容Chrome,Safari,Opera*/
-webkit-filter: contrast(30);
filter: contrast(30);
}
</style>
</head>
<body>
<div class="demo">
<img src="1.jpg" class="img1"/>
<img src="1.jpg" class="img2"/>
</div>
</body>
</html>Related recommendations: CSS tutorial
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