Extend your existing framework such as Bootstrap, Bulma etc. with all the utilities from Tailwind CSS. All you need to do is include one tiny ~8Kb Javascript file.
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Add this file to your page:
<script src="https://cdn.jsdelivr.net/npm/foxtailcss/dist/foxtail-bootstrap.min.js"></script>
Now you can use any Tailwind utility class in your markup:
<div class="grid grid-cols-2 md:grid-cols-4">
...
<button class="btn btn-primary font-extrabold border-transparent bg-pink-600
hover:bg-pink-500">Primary</button>
</div>