.asteriskField {
    display: none;
}

.selectdatewidget {
    display: inline-block;
}

select[name$="_day"].selectdatewidget {
    width: 27%;
}
select[name$="_month"].selectdatewidget {
    width: 38%;
}
select[name$="_year"].selectdatewidget {
    width: 35%;
}