Container (fixed width)
@media (min-width: 1200px)
.container {
width: 1170px;
}
@media (min-width: 992px)
.container {
width: 970px;
}
@media (min-width: 768px)
.container {
width: 750px;
}
Container-Fluid (100%)
.container-fluid {
padding-right: 15px;
padding-left: 15px;
margin-right: auto;
margin-left: auto;
}