Making a pretty social sign-in page

So far, we haven't paid much attention to making our application look nice; after all, this book is about Go and not user interface development. However, there is no excuse for building ugly apps, and so we will build a social sign-in page that is as pretty as it is functional.

Bootstrap is a frontend framework for developing responsive projects on the Web. It provides CSS and JavaScript code that solve many user interface problems in a consistent and good-looking way. While sites built using Bootstrap tend to look the same (although there are a plenty of ways in which the UI can be customized), it is a great choice for early versions of apps or for developers who don't have access to designers.

Tip

If you build your application using the semantic standards set forth by Bootstrap, it will become easy for you to make a Bootstrap theme for your site or application, and you know it will slot right into your code.

We will use the version of Bootstrap...