How to provide sustainable and elegant web design that conforms to customer needs and complies with legal regulations?

I have yet to finish this blog post in English, but there are similar posts both in German (in this very blog: nachhaltiges, elegantes Webdesign 2024/2025) and in my DEV blog post series: Accessibility, SustyWeb, SDGs, and upcoming European Legislation in 2024/2025 🇪🇺⚖️