Accessibility for the webpage

During the evaluation of the OpenSSF best practices I find out that our site has some issue with accessibility using the following link https://wave.webaim.org/report#/https://cloudnative-pg.io we should try to address this issue, since this could affect a lot of people.

Start with the WAVE report linked in the issue for https://cloudnative-pg.io and review its accessibility findings. Identify the relevant website sources for each reported issue, address the confirmed problems, and rerun the report to verify the site has improved.

Written by the indexing model from the issue text.