body {
    margin-right: 10%;
    margin-left: 10%;
    text-align: justify
    }
h1, h2, h3, h4, h5 {
    text-align: center;
    font-style: normal;
    font-weight: normal;
    line-height: 1.5;
    margin-top: 0.5em;
    margin-bottom: 0.5em
    }
p {
    text-indent: 4%
    }
.figcenter {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    margin-top: 1em;
    margin-bottom: 1em
    }
sup {
    font-size: 70%
    }
a:link {
    color: blue;
    text-decoration: none
    }
a:visited {
    color: blue;
    text-decoration: none
    }
a:hover {
    color: red
    }