A font called Ahem has been developed which consists of some very well defined glyphs of precise sizes and shapes; it is especially useful for testing font and text properties. The font’s em-square is exactly square. Its ascent and descent combined is exactly the size of the em square; this means that the font’s extent is exactly the same as its line-height, meaning that it can be exactly aligned with padding, borders, margins, and so forth. Its alphabetic baseline is 0.2em above its bottom, and 0.8em below its top.
"When we introduced Atom in 2011, we set out to give developers a text editor that was deeply customizable but also easy to use—one that made it possible for more people to build software... Today, we’re announcing that we are sunsetting Atom and will archive all projects under the organization on December 15, 2022."
"Realistically, you will always have some discrepancy between "staging" and production environments, but the distance between them should be much smaller than between dev and prod. For example, working on https is always a pain in localhost but is a requirement on prod."