body {
    background: #ffffdc;
    margin: 10%;
    text-align: justify
    }
h1 {
    color: green;
    text-align: center;
    word-spacing: 0.6em
    }
h2 {
    color: green;
    text-align: center;
    word-spacing: 0.3em
    }
h3, h5, h6 {
    color: green;
    text-align: center
    }
h4 {
    color: black;
    text-align: center
    }
.centclass {
    text-align: center
    }
blockquote {
    font-size: 0.8em
    }
.s0 {
    margin-left: 10%
    }
.s1 {
    margin-left: 12%
    }
.s2 {
    margin-left: 15%
    }
.s3 {
    margin-left: 18%
    }
.s4 {
    margin-left: 21%
    }
.s5 {
    margin-left: 24%
    }
.s6 {
    margin-left: 27%
    }
p.ch {
    margin-bottom: 4em;
    margin-top: 4em;
    line-height: 1.5
    }
p.chsum {
    font-size: smaller;
    text-align: center;
    margin-bottom: 4em;
    margin-top: 4em;
    line-height: 1.1
    }
a:link {
    color: blue;
    text-decoration: none
    }
a:visited {
    color: #00aeed;
    text-decoration: none
    }
a:hover {
    color: red;
    text-decoration: underline
    }