.cf {
    /* 清除浮动：zoom是IE的专属属性，可以在IE6以下清除浮动 */
    zoom: 1;
}

.cf:after {
    /* after伪元素清除浮动 */
    content: "020";
    height: 0px;
    display: block;
    overflow: hidden;
    clear: both;
}

/* 主体部分开始 */
.sd_main {
    width: 1200px;
    margin: 20px auto 0;
    border: #dbdbdb 1px solid;

}
.lm_title {
    width: 1198px;
    line-height: 45px;
    border-bottom: 2px solid rgb(225, 35, 37);
    background-color: #f7f7f8;
    text-align: center;
    font-size: 18px;
    color: #e12325;
}
.lm_subtitle {
    width: 1200px;
    border-bottom: 2px solid #DBDBDB;
}
.lm_subtitle li {
    float: left;
    width: 240px;
    height: 45px;
    line-height: 45px;
    text-align: center;
}
.lm_subtitle li a{
    color: #9f9f9f;;
}
.lm_subtitle li.on a{
    display: block;
    color: #e12325;
    border-bottom: 2px solid rgb(225, 35, 37);
}
.lm_list li {
    width: 1160px;
    line-height: 40px;
    margin: 0 auto;
}
.lm_list li a {
    float: left;
    width: 1000px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding-left: 20px;
    background: url(header.gif) no-repeat;
    background-position-y: 6px;
}
.lm_list li a:hover {
    color: #0066ff;
}
.lm_list li span {
    float: right;
}

/* 老年样式开始 */
.sd_old .lm_title{
    font-size: 48px;
    line-height: 96px;
}
.sd_old .lm_subtitle li {
    height: 72px;
    line-height: 72px;
}
.sd_old .lm_subtitle li a {
    font-size: 36px;
}
.sd_old .lm_list li {
    font-size: 24px;
    line-height: 48px;
}
.sd_old .lm_list li a {
    background: url(header.gif) no-repeat;
    background-position-y: 12px;
}
/* 老年样式结束 */
/* 移动端样式开始 */
.sd_mobile .sd_main {
    width: 95vw;
    margin: 3vw auto 0;
    box-sizing: content-box;
}
.sd_mobile .lm_title {
    width: 95vw;
    line-height: 12vw;
    font-size: 5vw;
}
.sd_mobile .lm_subtitle {
    width: 95vw;
}
.sd_mobile .lm_subtitle li {
    width: 47.5vw;
    height: auto;
    line-height: 10vw;
    font-size: 4vw;
}
.sd_mobile .lm_subtitle li.on a {
    border: none;
}
.sd_mobile .lm_list li {
    width: 90vw;
    line-height: 10vw;
    font-size: 4vw;
}
.sd_mobile .lm_list li a {
    background: none;
    width: 50vw;
    padding-left: 0vw;
}
/* 移动端样式结束 */