body { max-width: 700px; margin: 50px auto; padding: 0 20px; 
    background: #fdf6e3; color: #5c4b3c; 
    font-family: "Noto Serif SC", "Songti SC", serif; 
    line-height: 2; font-size: 18px; }
h1 { text-align: center; font-size: 2em; color: #b58900; }
h2 { margin-top: 2.5em; color: #6c5b4b; border-left: 4px solid #b58900; padding-left: 0.5em; }
p  { text-indent: 2em; margin: 1em 0; }
.center { text-align: center; color: #999; font-size: 0.9em; }