false fontsize with remcalc function in foundation zurb

Question

I would like to use rem and not px as the unit of measurement for the website. The problem is that the calculated values are not correct.

I'm using:

• foundation zurb
• version 6.8.1
• [email protected] start

For example, my script looks like this:

h1 {
 font-size: rem-calc(30px)
}

The following is generated as the result in the CSS:
h1 {
 font-size: 1.3636363636rem;
}

Does anyone have any advice on what is wrong here and how I can correct it?

Best regards and many thanks for your help m.orange