How Can I Use Sass Variables Within CSS's `calc()` Function?

Understanding Sass Variable Interpolation in CSS calc() Function

Your code employs the calc() function in Sass, which allows dynamic calculations for CSS values. However, you encounter an issue when attempting to utilize a Sass variable within the calc() function. This article will delve into the solution to this problem.

Interpolating Sass Variables

To ensure the calc() function correctly interprets Sass variables, you need to interpolate them within the function. Interpolation means inserting the variable's value into the code. In Sass, this can be achieved by enclosing the variable's name within #{}.

Revised Code

Here's the revised code that interpolates the $body_padding variable within the calc() function:

body {
  height: calc(100% - #{$body_padding}); // Interpolation
}

By interpolating the variable, Sass evaluates its value, replaces it within the calc() function, and generates the correct CSS output.

Alternative Approach: Using border-box

An alternative approach to handling this situation is to set the box-sizing property of the element to border-box. This ensures that the height calculation includes the padding within its 100% value.

Revised Code Using border-box

body {
  box-sizing: border-box;
  height: 100%; // 100% includes the padding
  padding-top: $body_padding;
}

The above is the detailed content of How Can I Use Sass Variables Within CSS's `calc()` Function?. For more information, please follow other related articles on the PHP Chinese website!