Web designers often treat SEO as an afterthought, but it should be central to...

https://city-wiki.win/index.php/Responsive_Design_vs._Separate_Mobile_Site:_What%E2%80%99s_Actually_Better_for_SEO%3F

Web designers often treat SEO as an afterthought, but it should be central to your build process. Start by prioritizing mobile-first indexing and fluid responsive design to keep Google happy