Trello CSS tunning for Week tasks

gistfile1.css

.list {
    flex: 0 0 200px;
}

.list:first-child {
    flex: 0 0 250px;
    background: #D2CEE6;
}

.list:nth-last-child(3) {
    flex: 0 0 400px;
    background: #DAE7E4;
    position: absolute;
    left: 265px;
    bottom: 0;
    width: 800px;
}

.list:nth-last-child(3) .list-cards {
    overflow-x: auto;
}

.list:nth-last-child(3) .list-card {
    float: left;
    min-width: 189px;
    margin-right: 5px;
}