.container has one fixed width for each screen size in bootstrap (xs,sm,md,lg);
.container-fluid expands to fill the available width.
@media (min-width: 568px) {
.container {
width: 550px;
}
}
@media (min-width: 992px) {
.container {
width: 970px;
}
}
@media (min-width: 1...
