First BootStrap Example(Using .Container class)

In Bootstrap, we need to wrap everything in container class, this colour of fonts is based on class named as text-danger class

Pages are always responsive, color of fonts is based on class named as text-success

There are two types of container, one is .container another one is .container-fluid

The .container class, provides a responsive fixed width container

Second BootStrap Example (Using Container-fluid class)

Container-fluid class provides a full-width container, spanning the entire width of the viewpoint