html {
    font-size: 62.5%;
    font-family: Arial,微软雅黑,Microsoft YaHei UI,Microsoft YaHei,SimSun,宋体,Arial Narrow,HELVETICA,Helvetica Neue,Helvetica,STHeiTi,Arial,sans-serif;
}

html, body {
    width: 100%;
    height: 100%;
    padding: 0;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    margin: 0;
}

body {
    font-family: Arial,微软雅黑,Microsoft YaHei UI,Microsoft YaHei,SimSun,宋体,Arial Narrow,HELVETICA,Helvetica Neue,Helvetica,STHeiTi,Arial,sans-serif;
    font-size: 1.6rem;
    line-height: 1.5;
}
.maincontainer {
    width: 100%;
}
li {
    list-style-type: none;
}
a {
    text-decoration: none;
}
.top-left img {
    width: 100%;
}