Too Long; Didn't Read
With the development of the Internet, more and more applications are moving to mobile devices and the browser. Today we will consider the last method of creating applications, i.e. in the form of websites, taking into account both modern applications and enterprise applications that should be compatible with older versions of browsers. We will try to take a closer look at various options for how we can allow users to choose from various themes, as well as customize them for their needs. When describing all the approaches, I will give some examples based on real solutions used in the development and applied in finished projects.