table纵横都需要下拉框

table 溢出，下拉框显示不全

 <div class="table-scrollable"style="height: 500px; overflow-y: visible;">
                                        <table class="table table-striped table-bordered table-hover order-column hide" id="table_1">
                                            <thead>
                                                <tr>

table 加一个高度，用

overflow-y: visible;

table 横向滚动条 

table table-striped table-bordered table-hover order-column