Browsers and OSes may show content differently, although the differences here are not as large as for different devices.
In terms of operating systems, Apple, Windows, and Android have different UI guidelines and styles that they support.
For browsers, such as Chrome, Safari, Firefox, UC Browser (very popular in India and the Philippines), and Edge, the differences are about particular code APIs that are supported or not. These are not typically very big differences. However, there are other browsers, such as Opera Mini and UC Browser Mini, which operate very differently and are used by millions of people. For example, Opera Mini is used by people who have basic phones and want to control ...