First launch instruction text does not wrap nicely on narrow screens

[Newbytee]

Describe the bug
On narrow screens the text telling you to pick a class currently has a ridiculous amount of space between the wrapped lines. See screenshot.

To Reproduce
Steps to reproduce the behavior:

1. Open Berzan.js without a default class set
2. Make sure your window is narrow
3. Observe that the text doesn't wrap properly

Expected behavior
Text wraps with reasonable spacing between the lines.

Screenshots