*{
    padding: 0;
    margin: 0;
}
body{
    /* background-image: url(../img/xiarea-bg.png); */
    /* background-size: 1920px 696px;
    background-repeat: no-repeat; */
    overflow-x: hidden;
    min-width: 1280px;
}
.limit{
    width: 950px;
    margin:auto;
}
.top{
    width: 100vw;
    background-color: #1875E8;
}
.top-bg{
    width: 1280px;
    height: 105px;
    color: #fff;
    text-align: center;
    font-weight: bolder;
    line-height: 320px;
    font-size: 80px;
    background-color: #D30404;
    margin:auto;
    display: block;
}
.top-title{
    font-weight: bolder;
    font-size: 28px;
    text-align: center;
    width: 900px;
    margin: auto;
    /* height: 60px; */
    line-height: 60px;
    margin-top: 10px;
    text-shadow: 0 0 5px #fff, 0 0 5px #fff, 0 0 5px #fff;
    -webkit-text-stroke: 1px white;
}
.subtitle{
    line-height: 30px;
    font-size: 16px;
    width: 1280px;
    margin: auto;
    text-align: center;
}
.cover{
    width: 840px;
    height: 472.5px;
    padding: 25px 30px;
    margin: auto;
    display: block;
    background-color: #B20600;
    margin-top: 30px;
}
.abstract{
    padding: 25px;
    background-color: #F4F4F4;
    width: 850px;
    line-height: 25px;
    margin: auto;
    margin-top: 20px;
    font-size: 16px;
}
.abstract i{
    color: #B20600;
    font-style: normal;
}
.important{
    width: 900px;
    height: 80px;
    margin:auto;
    display: block;
    margin-top: 20px;
}
.list-item{
    width: 850px;
    padding:  25px;
    background-color: #F4F4F4;
    margin:auto;
    margin-top: 50px;
}
.list-item .item{
    background-color: #FFFFFF;
    margin-top: 18px;
    padding: 10px;
}
.list-item .item .title{
    font-size: 24px;
    line-height: 45px;
}
/* .list-item .item:nth-child(1){
    margin-top: 0;
} */
.list-item .item .intro{
    line-height: 22px;
    font-size: 14px;
    color: #666;
}
.content{
    width: 880px;
    margin: auto;
    padding-top: 100px;
}
.content .title{
    font-size: 33.18px;
    font-weight: bold;
    line-height: 39px;
    text-align: center;
    margin-bottom: 31px;
}
.content .from{
    color: #5c5c5c;
    font-size: 15px;
    line-height: 30px;
    margin-bottom: 50px;
}
.content .text{
    line-height: 30px;
    font-size: 18px;
    font-weight: 400;
    color: #2b2b2b;
}
.content .text img{
    width: 100%;
}
.content .editer{
    border-top: 1px solid #E6E6E6;
    line-height: 25px;
    padding: 13px 0;
    text-align: right;
    color: #5c5c5c;
    margin-top: 30px;
}
.qrcode-box {
    width: 120px;
    border: 1px solid #E6E6E6;
    padding: 30px;
    margin: 60px auto 30px auto;
    font-size: 12px;
}

.qrcode-box img {
    width: 120px;
    height: 120px;
}

.xiarea-bg{
    position:fixed;
    top: 0;
    left: 50vw;
    transform: translateX(-50%);
    z-index: -1;
}