body.c-app {
    overflow-x: auto;
    min-width: 1320px;
    /* Suppose you want minimum width of 1320px */
    width: auto !important;
    /* Firefox will set width as auto */
    width: 1320px;
    /* As IE6 ignores !important it will set width as 1140px; */
}

.container,
.container-sm,
.container-md,
.container-lg,
.container-xl {
    max-width: 1320px;
}