HTML

<div class="breadcrumbbox">
   <div class="container">
      <ul loop="$main_menu->list=>$key,$val" cond="$val['selected']">
         <li><a href="/"><i class="xi-home"></i></a></li>
         <li><span><b><a loop="$main_menu->list=>$key1,$val1" cond="$val1['selected']" href="{$val1['href']}" class="on">{$val1['link']}</a></b></span></li>
         <li cond="$val['list']">
            <select name="" id="" onchange="if(this.value) location.href=(this.value);">
               <option value="{$val1['href']}" loop="$val['list']=>$key1,$val1" cond="$val1['link']" <!--@if($val1['selected'])-->selected<!--@end-->>
                  {$val1['link']}
               </option>
            </select>
         </li>
      </ul>
   </div>
</div>

CSS

.breadcrumbbox{border-bottom:1px solid #d9d9d9;}
.breadcrumbbox ul{margin:0;padding:0;}
.breadcrumbbox li{list-style:none;border-right:1px solid #d9d9d9;display:inline-block;min-width:60px;text-align:center;height:55px;line-height:55px;vertical-align:middle;padding:0 10px;box-sizing:border-box}
.breadcrumbbox i{font-size:20px;}
.breadcrumbbox select{
   border:0;
   -webkit-appearance: none;
   -moz-appearance: none;
   text-indent: 1px;
   text-overflow: '';
   padding-right:17px;
}
.breadcrumbbox li:last-child:after{
   content: "";
   display: inline-block;
   width: 0;
   height: 0;
   border-left: 4px solid transparent;
   border-right: 4px solid transparent;
   border-top: 4px solid #000;
   position: relative;
   left: -15px;
   top: -2px;
   /*content:"";border-left:1px solid #a4a4a4;display:inline-block;width:.1rem;height:.9rem;margin:0 .6rem;*/
}
.breadcrumbbox select::-ms-expand {
   display: none;
}
.breadcrumbbox > .container{border-left:1px solid #d9d9d9;border-right:1px solid #d9d9d9;}

참 이런 코드들도 모듈화해서 작업하면 수월할 듯 싶네요.

PREVIEW

http://happytown57.cafe24.com/gallery03