.edition{
    width:800px;
    margin: 0 auto;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "微软雅黑";
}
ul, li {
    list-style: none;
}
a {
    text-decoration: none;
    color: #888;
}
a, button {
    cursor: pointer;
}
img {
    border: none;
}
img {
    cursor: pointer;
}
body, textarea, input, button, select, keygen, legend {
    background: #f0f7fd;
    outline: 0;
    color: #444;
}