HTML templates are pre-designed and pre-built web pages that can be customized and used as a basis for building websites. They often include common elements such as headers, footers, menus, and content sections, and can be easily edited using HTML and CSS to fit specific branding and content needs.

Material Design is a design system developed by Google that provides a set of guidelines, components, and tools for creating visually appealing and functional user interfaces. Material Design is designed to be flexible and customizable, making it a great choice for a wide range of applications and use cases.