Detailed introduction to mathematical expression calc() in css

Mathematical expression calc() is a function in CSS, mainly used for mathematical operations. Using calc() provides convenience and new ideas for page element layout.

Definition

The mathematical expression calc() is the abbreviation of calculate. It allows the use of four operators, -, *, /, and can be mixed with %, px, em, and rem. Calculate with other units

Compatibility: IE8-, safari5.1-, ios5.1-, android4.3- are not supported, android4.4-4.4.4 only supports addition and subtraction. IE9 does not support backround-position

(recommended tutorial: CSS tutorial)

Note: There must be whitespace characters on both sides of the and-operator

Examples are as follows:

测试文字一
    
测试文字二

Application

Mathematical expression calc() is often used for numerical operations in different units in layout

    

        
left
    
    

        
right
        
right
    

Related video tutorials Recommended: css video tutorial

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