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HTML/CSSAdvanced#css#units
Bootstrap provides pre-styled, opinionated components (buttons, cards, navbars) you customize via overrides or theme variables. Tailwind provides low-level utility classes you compose yourself to build custom designs, giving more flexibility but requiring more markup decisions upfront.
<!-- Bootstrap --> <button class="btn btn-primary">Save</button> <!-- Tailwind --> <button class="bg-blue-600 text-white px-4 py-2 rounded">Save</button>