Totally Information's web-components
These web components from TotallyInformation are stand-alone without external dependencies. Each one aims to simplify the use of HTML as a User Interface (UI). They work on any page without the need for a framework or other dependencies. Where they use 3rd-party libraries, these are integrated so you don't need to worry about them.
All you need to do is create a reference to the component's library in your page as shown in the readme and documentation.