How do I tighten my loose screen?

So I bought a refurbished MacBook Air, the 11-inch version. It’s an early 2014 model, and is in great condition. Very few cosmetic details for it being refurbished. The only issue is that the screen is loose and doesn’t stay up. If it experiences movement at all while the screen is open, the screen will fall backwards as far as it can go. Can I tighten something to make sure the screen stays where I place it?

Side note- I had a cover on it for a while and noticed that when the bottom cover was on it, it usually stayed put but I didn’t see the need for the bottom cover as I really just wanted the top cover as decoration. But the bottom cover/protection piece kept it where I put it.