Examples of CSS filters (1) Overview

The identifier of the filter attribute of CSS is filter. To give you an overall impression on it, let's take a look at its writing format:
Filter: filtername (parameters)
How is it? Isn't it very simple? It seems that there is no big difference with the attribute definition mentioned above. Filter is the Filter attribute selector.
That is to say, as long as you perform filter operations, you must first define filter; filtername is the filter attribute name, which includes alpha, blur, chroma, and other attributes. For details, see the following table:
 
The parameters in the brackets in the filter expression above represents the parameters of each filter attribute, which determines how the filter will be displayed.