Currently we're not aware if a CSS change breaks unrelated parts of the FundraisingFrontend site. Adding a visual checker service that compares automated screenshots against known "good" ones (esp. on different browsers) would get around that. We should look for a commercial, hosted solution to avoid maintenance costs

Example services:

• BackstopJS (opensource)
• Needle (opensource)
• Lamdatest (commercial)
• Happo (commercial)

More services can be found by searching "Alternative to SERVICE_NAME".