.ui-autocomplete{
    background:#fff !important;
    max-height:150px;
    padding:10px 0;
    overflow-y:auto;
    overflow-x:hidden;
}
.ui-autocomplete .ui-menu-item{
    background:none !important;
     border:none;
    color:#000;
    font-family:Arial;
    font-size:1em;
}