/* 清楚浏览器默认样式 */

ul,li,p,h1,h2,h3,h4,h5,h6,body {
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
    color: #333;
}

li {
    list-style: none;
}

input {
    outline: none;
    border: none;
}