ul, li {
    margin: 0;
    padding: 0;
    list-style: none;
}
.leftfix{
    float:left
}
.rightfix{
    float: right;
}
.clearfix{
    content: "";
    display: block;
    clear: both;
}
.container{
    width: 1080;
    margin: 0 auto;
}
h1{
    text-align: center;
}
.title{
    font-size: 30px;
    text-align: center;
    font-weight: bold;
}
.title2{
    font-size: 20px;
    font-weight: bold;
}
.title3{
    font-size: 18px;
    font-weight: bold;
    white-space: pre-wrap;
}
.margintop10{
    margin-top: 10px;
    white-space: pre-wrap;
}
.content{
    font-size: 17px;
    margin-top: 5px;
    white-space: pre-wrap;
}

table {
    margin: 0 auto;
    border-collapse: collapse; /* 边框合并 */
    border-spacing: 0; /* 边框间距 */
    margin-top: 15px;
}

th, td {
    border: 1px solid black; /* 单元格边框样式 */
    padding: 8px; /* 单元格内边距 */
}

.item1{
    width: 465px;
}
.item2{
    width: 270px;
    
}
.item3{
    width: 344px;
} 

.download td{
    text-align: center;
}
.last{
    margin-bottom: 200px;
}