.wpps-ajax-search {
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 1.5em;
}
.ui-autocomplete {
    max-height: 500px;
    overflow-y: auto;
    background: #fff;
    border: 1px solid #ccc;
    /*max-width: 400px;*/
    list-style-type: none;
    padding:0;
    z-index:1000;
}
.ui-autocomplete.ui-front {
    z-index:1000;
}
.ui-autocomplete li {
    padding: 3px 5px;
}
.ui-autocomplete li:hover {
    background-color: #eee;
}