Text in P&S overflows on very small phones

[blahosyl]

According to AmIResponsive, the phone view used is 320x480px scaled down to scale(0.219). This is not part of the emulators in Google Developer tools, so it was not picked up in testing.

Possible fix: use overflow property. However, it's interactions with Flexbox need to be tested.

Manually copied from Issue #63 of the originally forked repo.