.operation {
    position: fixed;
    bottom: 1em;
    right: 1em;
    font-size: 2em;
    text-align: center;
}
.operation div {
    border: #ddd 1px solid;
    width: 60px;
    height: 60px;
    padding-top: 0.6em;
    cursor: pointer;
}
.operation .backTop {
    display: none;
    border-bottom: none;
    border-top-left-radius: 50%;
}
.operation .back {
    padding-top: 0.4em;
    
    border-bottom-right-radius: 50%;
}
.operation  .glyphicon-share-alt {
    transform: rotate(180deg);
}
.operation .backTop:hover {
    background: #65BFF7;
    color: #fff;
}
.operation .back:hover {
    background: #FD996B;
    color: #fff;
}





body {
    font-family: "宋体";
    margin: 0;
    padding: 0;
}

body {
    font-family: "宋体";
    margin: 0;
    padding: 0;
}

body p {
    line-height: 2em !important;
}

.body p:first-child {
    text-indent: 32px;
}

.body span {
    margin-right: 23px;
}

h3 {
    font-weight: bold;
}

.body span {
    line-height: 1.5em;
}

.head {
    width: 100%;
    background-image: url(../img/bg.jpg);
    background-repeat: repeat;
    height: 15em;
}

.head img {
    width: 6em;
}

.head div {
    color: #fff;
    padding-top: 4em;
    text-align: center;
    font-weight: normal;
}

.head h1 {
    margin: 0.6em auto;
}

.body {
    width: 60%;
    margin: 0 auto;
    font-size: 1;
}

.body p {
    line-height: 1.6em;
}

.body u {
    font-weight: bold;
}

h2 {
    font-weight: normal;
    text-align: center;
}

.body {
    margin-top: 5em;
}

.body .time {
    display: block;
    text-align: right;
    margin: 1em 0;
}

.body p {
    margin: 0.3em 0;
    text-align: justify;
}

.box {
    margin-bottom: 50px;
}
.retract p {
    text-indent: 32px;            
}
h4 {
    font-size: 19px;
    font-weight: bold;
}
h5 {
    font-size: 18px;
    font-weight: bold;
}
h6 {
    font-size: 14px;
    font-weight: bold;
}



@media screen and (max-width: 767px) {
    .body {
        width: 90%;
        margin-top: 0;
    }
    .head{
        display: none;
    }
    h2{
        font-size: 24px;
    }
    h3{
        font-size: 20px;
    }
    .operation .back {
        display: none;
    }
    .operation .backTop {
        display: none;
        border: none;
        background: #686a70;
        border-radius: 50%;
        width: 38px;
        height: 38px;
    }
    .operation .backTop span {
        color: #fff;
        font-size: 20px;
        top: -19px;
    }
    .operation .top {
        display: block;
    }
}