Yes. You can use multiple frameworks in one project. But, I won't recommend doing that, as the style might break somewhere when two or more frameworks would be using the same class name. Its better to use only one.
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Is it possible to mix and match css frameworks in one given app?
Yes. You can use multiple frameworks in one project. But, I won't recommend doing that, as the style might break somewhere when two or more frameworks would be using the same class name. Its better to use only one.