What do filters in CSS mean?

What is a filter in CSS? This article will introduce you to a little knowledge about filters in CSS.

CSS filter is not a browser plug-in, nor does it comply with CSS standards. It is a collection of functions specially developed by Microsoft to enhance browser functions and integrated into IE browser.

The identifier of the CSS filter is filter. Like other CSS statements, it is very simple to use. The syntax is as follows:

filter:filtername(parameters);

Filter For mirror operations, filter must first be defined. The following filtername is the filter attribute name, including alpha, blur, chroma and other attributes.

The parameters in brackets represent the parameters of each filter attribute. These parameters determine how the filter will be displayed.

Filter classification

Filters are divided into basic filters and advanced filters.

Basic filters refer to filters that can be directly applied to objects and take effect immediately. They mainly include the following filters.

Advanced filters refer to filters that need to be combined with JavaScript and other scripting languages ​​to produce various changing effects, including: BlendTrans, RevealTrans, Light, etc.

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