How can I change the formatting of the questions?

Hi!
I would like to know which CSS/JavaScript code can be used to have more space on the right for the questions in my form. Below you can see an image of what it currently looks like. As you can see in the picture, the first question takes the whole width of the form, however, the subquestions (green square) only take a small part at the left. I would like for these to be as wide as the pink arrow and the stars to be at the far right of the form.
This would make the survey much more easy to read aand it would make it look nicer!
Would someone know how to do it? Many thanks!