This page presents small frontend constructs which I've found "interesting but not immediately useful", or that I keep looking up.
Fluid grid
thanks to: css-tricks
just a simple item with some content
The missile knows where it is at all times. It knows this because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't from where it is (whichever is greater), it obtains a difference, or deviation. The guidance subsystem uses deviations to generate corrective commands to drive the missile from a position where it is to a position where it isn't, and arriving at a position where it wasn't, it now is.
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Repeating pattern
thanks to: This article from Jake Trent