Responsive Space Tourism Website made with Vite+React

It was quite a struggle to get the background images to align properly, even with the background said to no-repeat, there were still some grey areas of repeating images. I tried to keep the code DRY by using props and hooks to create reusable components. The height of the side navigation also looks weird in some places. I think it comes from the fact that all the main navigation pages received a page layout component which contained preset styles for navigation. With each of the pages having different heights, 100% no longer worked. I tried using the height: calc(100vh + extra pixels from the navbar), 100vh, 100%. None produced a uniform height for the side nav. In future projects, I would definitely try another approach. Any advice on best practices?.