.knowContent{
    width: 90%;
    margin: 0 auto;
    margin-top: 20px;
    padding-bottom: 50px;
    word-wrap: break-word;
    font-size: 0.8em;
}
.knowBtn{
    border-top: 1px #cdcdcd solid;
    padding: 36px 0;
}
.knBtn{
    width: 90%;
    margin: 0 auto;
    text-align: center;
}
.knBtn a{
    width: 100%;
    height: 100%;
    padding: 10px 0;
    display: block;
    color: white;
    border-radius: 5px;
}
.knBtn a img{
    width: 15%;
    vertical-align: middle;
}
.knBtn.green{
    background: #34cc67;
}
.knBtn.orange{
    background: #ff9a34;
}

/*分享css*/
.shareMask{
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    position: absolute;
    top: 0;
    left: 0;
    display: none;
}
.shareDiv{
    width: 100%;
    background: #e6e6e6;
    position: fixed;
    bottom: 0;
    left: 0;
}
.shareDiv ul li{
    border-bottom: 1px #bebebe solid;
}
.shareDiv ul li a{
    width: 100%;
    height: 100%;
    display: block;
    padding: 20px 0 20px 10%;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
}
.shareDiv ul li:last-child{
    border-bottom: none;
}
.shareDiv ul li a img{
    width: 15%;
    vertical-align: middle;
}
.shareDiv ul li a span{
    font-size: 1em;
    position: relative;
    top: 5px;
}