.set_drop_box{border: 1px solid #ccc; width: 150px; padding: 10px; cursor: pointer;}
.hide_bottom_border{border-bottom: 1px solid #fff; margin-bottom: -1px; height: 47px;}
.down_arrow span{display: inline-block; float: right; color: #ccc;}
.drop_box_list{ margin: 0px; padding: 10px 10px 5px 10px; background: #fff; z-index: 999; position: relative; border-bottom: 1px solid #ccc;
                border-right: 1px solid #ccc; border-left: 1px solid #ccc;}
.drop_box_list li{list-style-type: none; display: block; padding-bottom: 5px;}
.drop_box_list li input[type=checkbox]{margin-right: 10px;}
.outer_drop_box{border: 1px solid #ccc; width: 260px; position: absolute; border-bottom: 0px; border-right: 0; border-left: 0;}
.main_drop_box{float: left; margin: 0px 15px 10px 0px;}