.ms-container {
    width: 100% !important;
}

.ms-container .ms-selectable {
    margin-right: 0px !important;
    width: 50% !important;
}
.ms-container .ms-selectable, .ms-container .ms-selection {
    width: 50% !important;
}

.ms-container ul.ms-list {
    width: 100% !important;
}