Jessica

got annoyed with cohost's lightbox so I made it a bit nicer

has this ever happened to you?

well, I have a userstyle which makes it do this instead:

it also works with multi-image posts, and lets the next/previous arrows overlap images

/* ==UserStyle==
@name			cohost lightbox tweaks
@author			Jessica Stokes
@version		1.0.0
@namespace		net.jessicastokes
@preprocessor	less
==/UserStyle== */

@-moz-document domain("cohost.org")
{
	#lightbox-container > div.backdrop-blur > div.container {
		margin-top: 0;
		margin-bottom: 0;
		padding-top: 2rem;
		padding-bottom: 2rem;
		overflow-y: auto;
		
		& > div.h-full {
			height: auto;
		}
		
		/* cap height at 1 browser height minus the padding we use above */
		img {
			max-height: calc(100vh - 4rem);
		}
		
		/* "if there's more than one image" shorthand hack */
		&:has(div.items-center > div.items-center:nth-child(2)) {
			img {
				max-height: calc(100vh - 4rem - 64px - 2rem);
			}
			
			/* let the next/previous buttons overlap the image */
			& > div > div.grid {
				display: flex;
				justify-content: center;
				
				> svg {
					position: absolute;
					
					&:first-child {
						left: 0;
					}
					
					&:last-child {
						right: 0;
					}
				}
			}
		}
	}
}

I'm not sure what other userstyle add-ons allow using less, but I'm using Cascadea for Safari