![Bootstrap's website screenshot](/_next/image?url=https%3A%2F%2Fres.cloudinary.com%2Fdev-resources%2Fimage%2Fupload%2Fresources%2Fscreenshots%2F1d6aaa74-29aa-42bf-8701-33dde2da2e5a.png&w=3840&q=75)
Bootstrap
Icon
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UI/
ProgrammingBootstrap 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.