.parent {
    width: 600px;
    height: 400px;
    margin: 10px auto;
    display: flex;
    flex-flow: column wrap;
    align-items: flex-end;
    justify-content: space-between;
    background-color: #eee;
}
.parent div {
    margin: 10px;
    padding: 0 15px;
    color: #fff;
    font-weight: bold;
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-basis: calc(100% / 4);
    background-color: #009688;
}
.parent .two {
    width: 50%;
    align-self: flex-start;
}