Not sure if you should do it in Figma or Webflow, thats up to you. We do have UI elements in the figma style guide, that you could grab to make those elements that you need. For Webflow, we also have the UI elements section of the library here: https://www.relume.io/ui-elements
Specifically for the tagline, I would grab the element from an existing section in the figma kit and put it into the section I want it to be in. For the language switcher, I would use the input dropdown UI element that we have, which has an icon on the left (leading) and just put that in the navbar.
