.wcm-ui-combobox {
    width: 220px;
    height: 38px;
    border-radius: 2px;
    background-color: #ffffff;
    border: solid 1px #cdcdcd;
    color: #262626;
    -webkit-appearance: none;
    -moz-appearance: none;
    -ms-appearance: none;
    appearance: none;
    padding-left: 9px;
    padding-right: 20px;
    background: url("data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHg9IjBweCIgeT0iMHB4IiB3aWR0aD0iMTBweCIgaGVpZ2h0PSIxMHB4IiB2aWV3Qm94PSIwIDAgMTAwMCAxMDAwIiBlbmFibGUtYmFja2dyb3VuZD0ibmV3IDAgMCAxMDAwIDEwMDAiIHhtbDpzcGFjZT0icHJlc2VydmUiPg0KPGc+PHBhdGggZD0iTTEwLDIzMi43bDQ5MCw1MzQuNWw0OTAtNTM0LjVIMTB6Ii8+PC9nPg0KPC9zdmc+") right 5px center no-repeat;
}

.wcm-ui-combobox::-ms-expand {
 display:none;
}