Customize Size of Date time picker in jquery 1.9.1 for responsive web page

@media (max-width: 767px) {
.date-form { margin: 10px; }
label.control-label span { cursor: pointer; }

‪#‎ui‬-datepicker-div{
width:228px;
z-index:1000 !important
}
div.ui-datepicker{
font-size:14px;
}
}