I need this because the new mobile-first Github design doesn't want to take up more than half the horizontal width on my Macbook's display. I have to zoom to 20

I need this because the new mobile-first Github design doesn't want to take up more than half the horizontal width on my Macbook's display. I have to zoom to 200%, at which point there is little content vertically, strain my eyes, or use the macOS system zoom to properly read anything. To exemplify this, here's the same markdown from Gitea's home page on both Github and Gothub at the lowest browser zoom (Firefox) that fills the entire viewport. Github: https://files.catbox.moe/pwvb3s.png https://files.catbox.moe/pwvb3s.png Gothub: https://files.catbox.moe/66idln.png https://files.catbox.moe/66idln.png