.partner_list_long{display: block; max-width: 1215px; overflow: hidden; margin: auto;}
.partner_list_long ul{list-style: none; margin: 0; padding: 0; text-align: center;}
.partner_list_long ul li{display: inline-block; height: 68px; margin: 0 10px; vertical-align: bottom;}
.partner_list_long ul li>div{height: 100%; display: table; margin: auto;}
.partner_list_long ul li>div>div{display: table-cell;  vertical-align: middle; height: 100%;}