flex-flow: row nowrap
flex: 1 1 400px;
flex: 1 1 400px;
flex: 1 1 400px;
flex: 1 1 400px;
flex: 1 4 400px;
flex: 1 4 400px;
flex: 1 0 400px;
flex: 1 0 400px;
flex: 1 0 400px;
flex-flow: row wrap
flex: 1 1 400px;
flex: 1 1 400px;
flex: 1 1 400px;
flex: 1 1 400px;
flex: 1 1 400px;
flex: 1 1 400px;