Bootstrap js is killing my css?

Question

JavaScript

The problem is, if I include a Bootstrap script, all my custom styles break.
Why?

Answer 1

Don't touch the bootstrap classes, just extend them and add your own
Make your blocks inside the bootstrap framework
Check which blocks the JS is using
Check the layout - your styles should come last

Answer 2

Change the names of your classes that are collapsing.

Answer 3

Have you tried including bootstrap first and then writing your own styles? If you don’t want something to match by class in styles, use methodologies, then matches will definitely be reduced to 0, or, in the worst way, apply your styles in id.