a {
    text-decoration: none;
    color: #000000;
}

* {
    margin: 0;
    padding: 0;
}

body {
    margin: 0;
    /* 最好将 body 元素的边距和填充设置为 0 以覆盖不同的浏览器默认值 */
    padding: 0;
    margin-left: auto;
    margin-right: auto;
    font-size: 18px;
    font-family: Microsoft Yahei;
    background-size: cover;
}

h2 {
    width: 813px;
    margin: 50px auto 30px;
    font-size: 24px;
    text-align: center;
}

form {
    padding: 0px 40px;
    margin: auto;
}

label {
    cursor: pointer;
    line-height: 30px;
    padding-left: 5px;
}

p {
    text-align: center;
    margin: 10px;
}

p input {
    width: 90px;
    height: 30px;
    line-height: 30px;
    margin: 30px;
    background: #0066cc;
    border-radius: 4px;
    font-size: 18px;
    border: #0066cc 1px solid;
    color: #ffffff;
}