Tips for: Minus a CSS property from a JavaScript variable height?

Is there a way to deduct the navbar_height by 2rem in the code snippet below?

navbar_height = document.querySelector(".navbar").offsetHeight;
document.body.style.paddingTop = (navbar_height - 2 ) + "px";

Appreciate your help!

Answer №1

If you need to adjust the padding of a website, consider utilizing the calc function in CSS.

You can calculate the height of the navbar using JavaScript:
let navbarHeight = document.querySelector(".navbar").offsetHeight;
document.body.style.paddingTop = `calc(${navbarHeight}px - 2rem)`;

Answer №2

To retrieve the rem value, you can employ

parseFloat(getComputedStyle(document.documentElement).fontSize)
:

let rem = parseFloat(getComputedStyle(document.documentElement).fontSize);
console.log(rem);

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