Flexible grid layouts can be used on responsive websites. They are calculated based on how much each element occupies in their container. For example, if one element (e.g. A header is 25% of its container. This means that no matter how small the screen gets, the element will remain at 25%. Responsive websites have the ability to use breakpoints to create a customized look for every screen size. However, unlike adaptive websites that only adapt when they reach a breakpoint (which is what adaptive websites do), responsive websites change according to screen size.
These are the most important elements to think about when creating your website. It is essential that your website functions correctly to rank well in search engines and give your visitors the best experience.
When your browser connects to a website, the HTTP request will include a field called “user-agent” that will inform the server about the type of device attempting to view the page. The adaptive website will know what version of the site to display based on what device is trying to reach it (i.e. desktop, mobile, tablet). Issues will arise if you shrink the browser window on a desktop because the page will continue to display the “desktop version” rather than shrinking to the new size.