#page-cover {
    background: #fff;
    font-size: 17px;
    font-family: Helvetica;
    margin:15px;
}
#page-cover .books_info_mask_box {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    /* height: 100%; */
    height: 145px;
    overflow: hidden;
}
.cover_header {
    display: flex;
    height:170px;
    width: 100%;

}
#page-cover .books_info_cont {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 20px;
    z-index: 1;
    display: -webkit-flex;
    display: flex;
    padding-left: .36rem;
    box-sizing: border-box;
}
#page-cover .books_info_cont img {
    width:93px;
    height:auto;
    border-radius: 4px;
}
.cover {
    float: left;
    width: 26%;
}
.header2 {
    float: left;
    width: 62%;
    margin-left: 3%;
    height:120px;
    overflow: hidden;
}
.header2 .name {
    font-weight: bolder;
    font-size:18px;
    color:#1E1E1E;
    line-height: 22px;
    font-family: Helvetica Bold;
    max-height: 46px;
}
.header2 .author {
    margin-top:12px;
    color:#A3A2A2;
    font-size:15px;
}
.header2 .description {
    padding-top:12px;
    color:#A3A2A2;
    font-size:13px;
    overflow: hidden;
    text-overflow :ellipsis;
}
.books_con {
    margin-bottom: 55px;
}
.books_con .title {
    color:#1E1E1E;
    font-family: Helvetica;
    font-size:17px;
    font-weight: bold;
}
.books_con .content {
    font-size:15px;
    color:#8A8686;
    line-height: 20px;
}
.footer {
    width: 100%;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    display: table;
    z-index: 19;
    height: 55px;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;

    background:#fff;
}
.footer .footer_class {
    width: 100%;
    background:url('/img/share.png') 100% 100% ;
    box-shadow: 0px -1px 5px rgba(205, 205, 205, 0.5);
    padding-left:0px;
}

.footer .img {
    width:15%;
    height: 100%;
    float: left;
}
.footer .img>img {
    margin-top:2px;
}
.footer .middle {
    width:173px;
    float: left;
    padding-left:2%;
}
.footer .title {
    color:#656EFC;
    font-size: 15px;
    padding-top:10px;
}
.footer .desc {
    color:#9E9E9E;
    font-size: 12px;
    padding-top:6px;
}

.down_btn {
    float: right;
    width: 108px;
    background:#666CFB;
    background-size:100% 100%;
    margin-top:7px;
    height:40px;
    line-height: 35px;
    text-align: center;
    margin-right:14px;
}

.down_btn a {
    color:#fff;
    font-size:13px;
}