Getting percentages to work in CSS calc() for Firefox and Safari?

Question

I\'m using the following calc() equation to calculate the width of two divs:

CSS

.MyClass {
    width: calc((100% - 800px) / 2);
    wid         


        

Answer 1

Eureka. I've been struggeling with this for days. Finally found that 100vh instead off 100% would make it work with most browsers.

height: calc(100vh - 100px);

instead of

height: calc(100% - 100px);

Finally, now I can get on with my project.