.ind_cla{
	background:url(/skin/default/images/a_bg.jpg) no-repeat scroll left bottom;
	}
.link-dropdown {
    position: relative;
    display: inline-block;
    margin-left: 15px; 
    vertical-align: middle;
}
.dropdown-btn {
    background-color: #fff;
    border: 1px solid #ccc;
    padding: 2px 10px;
    cursor: pointer;
    font-size: 12px;
    position: relative;
    padding-right: 20px; 
}
/* 向上箭头样式 */
.dropdown-btn::after {
    content: "";
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%) rotate(180deg);
    border: 4px solid transparent;
    border-bottom-color: #666;
}
.dropdown-content {
    display: none;
    position: absolute;
    bottom: 100%; /* 向上展开 */
    right: 0;
    background-color: #fff;
    min-width: 150px;
    box-shadow: 0px -2px 8px rgba(0,0,0,0.1);
    z-index: 999;
    padding: 10px;
    border: 1px solid #ccc;
}
.dropdown-content a {
    display: block;
    padding: 4px 8px;
    text-decoration: none;
    color: #333;
    font-size: 12px;
    white-space: nowrap;
}
.dropdown-content a:hover {
    background-color: #f5f5f5;
}
/* 显示下拉内容 */
.dropdown-content.show {
    display: block;
}