body {
    margin-left: 10%;
    margin-right: 10%;
    text-align: justify
    }
hr {
    width: 100%
    }
a:link {
    color: blue;
    text-decoration: none
    }
link {
    color: blue;
    text-decoration: none
    }
a:visited {
    color: blue;
    text-decoration: none
    }
a:hover {
    color: red
    }
pre {
    font-size: 75%
    }