body {
    margin-left: 10%;
    margin-right: 10%;
    margin-top: 10%;
    margin-bottom: 10%;
    text-align: justify
    }
h1, h2 {
    text-align: center;
    font-weight: normal;
    margin-bottom: 1.5em
    }
h1 {
    margin-top: 2em;
    text-align: center;
    font-size: x-large
    }
h2 {
    margin-top: 2em;
    font-size: larger
    }
div.figure {
    display: block;
    margin: 0 auto;
    text-align: center
    }
div.center {
    margin: 0 auto;
    text-align: center
    }
ul {
    list-style-type: none
    }
p.caption {
    max-width: 60%;
    text-align: center;
    margin: 0 auto
    }
hr.pb {
    margin-top: 2em;
    margin-bottom: 2em;
    border: none;
    border-bottom: 1px solid silver;
    width: 100%
    }
p.larger {
    font-size: large
    }
p.x-large {
    font-size: x-large
    }
p.center {
    text-align: center
    }