Shortcode for the Questions page? or in a page?

Hi! I find the questions page look very odd, no sidebar, all empty. I know I could change at least the background and I could, if no better solution is found, make the width of question to 80% but it would look so much better in a normal page, is it possible to make it as page or as a shortcode?

You can look at it here : https://nameyour.domains/questions/ask/

Thank you!