Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
Internet Information Services (IIS) is an extensible web server software created by Microsoft for use with the Windows NT family.
LottieFiles is an open-source animation file format that's tiny, high quality, interactive, and can be manipulated at runtime.
PHP is a general-purpose scripting language used for web development.