*{
    margin: 0;
    padding: 0;
}
li{
    list-style: none;
}
a{
    text-decoration: none;
}
body{
    background-color: rgb(247,248,250);
}
body>header{
    text-align: center;
    background-color: rgb(196,206,222);
    padding: 15px 5px;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 5;
}
body>header>a{
    display: block;
    height: 26px;
    line-height: 26px;
    position: absolute;
    top: 12px;
    left: 15px;
}
body>header>a>img{
    height: 100%;
}
body>header>h3{
    margin: 0;
    font-size: 18px;
}
main{
    margin-top: 50px;
    margin-bottom: 100px;
}
main>div>div>div{
    background-color: white;
    border-radius: 5px;
    padding: 5px;
    margin: 10px 0;
}
/* 底部导航 */
footer{
    text-align: center;
    height: 80px;
    width: 100%;
    position: fixed;
    bottom: 40px;
    background-color: white;
}
footer li{
    padding-top: 20px;
}
footer li>img{
    width: 30%;
    max-width: 35px;
}
footer li>p{
    line-height: 40px;
}
/* 底部前进后退导航 */
#back{
    position: fixed;
    bottom: 0;
    height: 40px;
    width: 100%;
    z-index: 4;
}

/* 加载 */
.load{
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    background-color: white;
    opacity: 0.7;
    z-index: 4;
}
.load>img{
    width: 100%;
    position: absolute;
    top: 50%;
    margin-top: -50%;
}
.load>span{
    position: absolute;
    bottom: 0;
}

/* 分页 */
.paging{
    text-align: center;
    /* z-index */
}