.container {
    width: 80%;
    margin: auto;
}

.jumbotron {
    text-align: center;
	background-color: lightblue;
}

.row {
    display: flex;
    flex-wrap: wrap;
	background-color: lightgrey;
	padding: 20px;
}

.col-sm-4 {
    padding: 20px;
}