.main .main-left {
    width: 1000px;
    margin:0 auto;
}

.nextpage{ display: none;}
.btn-audio{ display:none;}
.main #detail p {
    text-align: justify;
}
body{
    background:#e4ecfd url(//www.news.cn/detail/lzh/images/pcbg.jpg) 50% 0 no-repeat;
    padding-top: 350px;
}

.xl-content{
    background: #fff;
    width: 1200px;
    margin: 0 auto;
    box-sizing: border-box;
    padding: 20px;
}
.header{
    min-height: auto;
}

.header, .main{
    width: 100%;
}

@media screen and (max-width: 767px) {
    body{
        background:#fff;
        padding-top: 0;
    }
   
    .main .main-left{
        width: 100%;
    }  
    .xl-content{
        background: #fff;
        width: 100%;
        margin: 0 auto;
        box-sizing: border-box;
        padding: 10px;
    }
    .header h1{
        font-size: 24px;
        padding: 0;
    }

}