body,p,ul,li,h1,h2,h3,h4,h5,h6,input{
    margin: 0;
    padding: 0;
    border: none;
}

body {
    font-size: 0;
}

li {
    list-style: none;
}

input {
    /* 去除选中input时候产生的外边框 */
    outline: none;
}

a {
    text-decoration: none;
    color: #000;
}