style: improve mobile formatting

This issue is to make sure things are readable on mobile. Original report: https://twitter.com/abcoathup/status/1745562100309864540

Example of poor formatting:

<img width=300 src="https://github.com/mds1/evm-diff/assets/17163988/c06f6076-f03e-4f04-9f44-94c5640e0a94" />
