Flip card

First of all, in case the font-family contains a white space, it’s better put it in quotes. Like:

font-family: "Rajdhani Regular", sans-serif;

If that doesn’t solve the issue, you can do the following:

  1. Put (temporarily) a text element on the page with text styled with the desired font, and publish it.

  2. Go to the page (on desktop), hover over the text element > Mouse right click > Inspect

  3. In the dev tools Elements tab > locate the element and look for its style font family

  4. Copy the font family to your code, and remove the temporary text element.