A browser is possibly the most difficult application to formally specify. 99.somemorenines% of software has less complex specifications.
The formal specification for something like Redis is likely much more akin to your car bridge spec. And to continue your analogy, I imagine the specifications for big bridges (Golden Gate, etc) are much more thorough than the ones you built.
The formal specification for something like Redis is likely much more akin to your car bridge spec. And to continue your analogy, I imagine the specifications for big bridges (Golden Gate, etc) are much more thorough than the ones you built.