.ui-datepicker {
    width: auto;
}
.ui-datepicker td {
    padding: 4px;
}
.ui-datepicker td span, .ui-datepicker td a {
    padding: 0.6em;
}

.ui-widget-content {
    border: 4px solid #00D1CD;
}

td.ui-datepicker-days-cell-over a {
    border: 2px solid #00D1CD !important

}