select.S1, select.S2, select.S3, select.S4, select.S5, select.S6, select.S7, select.S8, select.S9, select.S10, 
select.S11, select.S12, select.S13, select.S14, select.S15, select.S16, select.S17, select.S18, select.S19, select.S20
{
    width: 100%;
}