First of all, when you pass the front-end library, you usually overlay the appearance of the application in addition to the wireframe coding style. If you try to use two different structures (and this is generally possible), you will most likely find yourself in an inconsistent design.
Secondly, it is possible (often) to use more than one framework if they do not interfere with each other. However, there are a finite number of (good) ways to define an interface structure such as Bootstrap or Foundation (using classes), so you are likely to come across some hindrances. Please note that mixed frames can cause confusion for other developers in the project.
To conclude: Yes, you will usually find it possible to combine two (or even more) front-end frameworks, but they are likely to interfere with the other and cause headaches, and this can lead to an inconsistent design.
My advice as a fan of web developers would be to try to fix only one structure and add fragments and fragments from other frameworks to your code, if you need them, but do not try to complete several frames completely.
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