.box {
	max-width: 100%;
	margin: 0 15px;
	padding: 0 15px;
}

.col {
	border: 1px solid #CCC;
}

.flex-basis {
	flex-basis: 1px;
}
.grow-1 {
	flex-grow: 1;
}
.grow-2 {
	flex-grow: 2;
}
.grow-3 {
	flex-grow: 3;
}
.grow-4 {
	flex-grow: 4;
}
.grow-5 {
	flex-grow: 5;
}
.grow-6 {
	flex-grow: 6;
}