* {
    margin: 0;
    padding: 0;
}

body {
    width: 1200px;
    margin: 0 auto;
    font-family: "微软雅黑";
    font-size: 16px;
    line-height: 30px;
}

a {
    text-decoration: none;
    color: red;
}
/* 设置header文字样式 */
header {
    margin-top: 10px;
    text-align: center;
    color: red;
    font-size: 18px;
    font-weight: bold;
    
}
/* 设置正文样式 */
article {
    margin-top: 10px;
    text-align: justify;
    text-indent: 2em;
   
}
.right{
    float:right;
}
.left{
    float:left;
}


#btn {
    width: 200px;
    /* height: 150px; */ 
    float: left;   
    text-align: left;
    /* margin-top: 250px; */
   
    font-size: 14px;
    padding-left: 0px;   
    /* font-weight: bold; */
    list-style-type: none;
    list-style-position: inside;
    border-left: 3px solid #D90000; 
}

#btn li {
    /* 这里需要将li设为浮动才能变为横向 */
    /* display: inline-block; */
    /* width: 140px; */
   
    height: 35px;
    line-height: 35px;
    text-indent: 0;
    padding-left: 10px;
    overflow: hidden;
    white-space: nowrap;
    /* word-break: keep-all; */
    /* 列表项不允许换行 */
    text-overflow: ellipsis;
    /* 对于多余的部分用省略号表示 */
    
   
    text-align: left;
    cursor: pointer;
    margin-left: 0px; 
   
    border-bottom: 1px solid #999;
    /* box-sizing: border-box; */
}


#btn li:nth-child(1) {
    color: red;
    cursor: default;
}

.clear {
    clear: both;
}

#ved01 {
    /* display: none; */
    width: 995px;
    float:right;
    /* margin-top: 20px; */
    /* margin-bottom: 20px; */
    text-align: center;
    font-size: 18px;
    font-weight: bold;
}

.qianming {
    text-align: right;
    
}

.xz {
    /* margin-top: 10px; */
    text-align: right;
   
    color: red;
}

footer {
    text-align: center;
   
}