How to make the Page Header smaller

PHPMaker General Discussion (PHPMaker)
1

Hi,
I want to make the page-header smaller, because its too large (28.8px).
Tried to change the Theme variable in Typography (Bootstrap) $h1-font-size to ($font-size-base * 1.5), but this did not help.
What is the right way?

2

https://discourse.hkvstore.com/t/inspect-html-element-and-add-your-own-css-styles/6310/1

3

Thnx. But where are the Theme-variables used for?