body {
    font-family: Georgia, "Times New Roman", serif, sans-serif,
    "Microsoft YaHei",  STXihei, -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto;
    margin: 0px;
    background-color: #b5a789;
}

header {
    background-color: #675c47;
    height: 60px;
    text-align: center;
    width: 920px;
    padding: 1px 0px 25px 0px;
    margin-left: auto;
    margin-right: auto;
    vertical-align: top;
    color: yellowgreen;
}

main {
    background: #efe5d0;    
    width: 860px;
    font-size: 120%;
    text-indent: 40px;
    text-align: left;
    margin-left: auto;
    margin-right: auto;
    padding: 5px 30px 5px 30px;
}

footer {
    background-color: #efe5d0;
    padding: 5px 10px 5px 10px;
    margin: 5px 10px 0px 10px;
    width: 900px;
    margin-left: auto;
    margin-right: auto; 
    font-size: 100%;
}

nav {
    background-color: #efe5d0;
    padding: 5px 10px 5px 10px;
    margin: 5px 10px 5px 10px;
    width: 900px;
    margin-left: auto;
    margin-right: auto; 
    font-size: 150%;
}
nav ul {
    margin: 0px;
    list-style-type: none;
    padding: 5px 0px 5px 0px;
}

nav ul li {
    display: inline;
    padding: 5px 10px 5px 10px;
}

ul {
    text-indent: 0px;
    padding: 1px 0px 0px 0px;
}

p.indent {
    text-indent: 80px;
}

p.indent_2 {
    text-indent: 120px;
}