Web Application User Interface development

I am new in web application development, I would like to know what are the choices for developing the user interface for a an application such as an Inventory management system. for the backend, I am using python Django with MySQL but I would like to know if there are other technologies other than HTML, CSS, and JS for UI development.

I know that HTML, CSS, and JS are mostly used for website development but I am not sure if these are the recommended technologies for a web application where lots of user interaction is involved.

Thanks