@media (min-width: 576px) {
    .container {
        max-width:540px
    }
}

@media (min-width: 768px) {
    .container {
        max-width:720px
    }
}

@media (min-width: 992px) {
    .container {
        max-width:960px
    }
}

@media (min-width: 1200px) {
    .container {
        max-width:1140px
    }
}