Explain the container classes in Bootstrap

beginner

Re-explain

Bootstrap provides three main container classes:

.container: Fixed-width container with responsive breakpoints
- Provides max-width at different screen sizes
- Centers content horizontally
.container-fluid: Full-width container
- Spans 100% of the viewport width
- No maximum width restrictions
.container-{breakpoint} (Bootstrap 4+): Responsive containers
- .container-sm, .container-md, .container-lg, .container-xl, .container-xxl
- 100% width until specified breakpoint, then behaves like .container

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