CSS | calc() Function

The calc() function is an inbuilt function in CSS which is used to perform calculations based on CSS property.

Syntax:

calc( Expression )

Parameters: This function accepts single parameter Expression which is mandatory. This parameter contains mathematical expression which need to implement. The operators used by this parameters are: +, -, *, /

Below program illustrates the calc() function in CSS:

Program:

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<!DOCTYPE html>
<html>
    <head>
        <title>calc function</title>
        <style>
            .geeks {
                position: absolute;
                left: 50px;
                width: calc(100% - 20%);
                height:calc(500px - 300px);
                background-color: green;
                padding-top:30px;
                text-align: center;
            }
            .gfg {
                font-size:40px;
                font-weight:bold;
                color:white
            }
            h1 {
                color:white;
            }
        </style>
    </head>
    <body>
        <div class = "geeks">
            <div class = "gfg">GeeksforGeeks</div>
            <h1>The calc() Function</h1>
        </div>
    </body>
</html>

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Output:

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