body{
    max-width: 720px;
    margin: 0 auto;
    padding: 24px;
    font-family: "Microsoft YaHei",sans-serif;
    line-height: 1.7;
    color: #222222;
    background-color: #f8f7f4;
}

h1{
    color: #1f2937;
}

h2{
    color: #374151;
}
a{
    color: #b3532a;
}