body {
    background-color: black;
    color: white;
    font-family: 'Courier New', monospace;
}

.heading_large {
    text-align: center;
}
.subheading_large {
    text-align: center;
    font-size: 2em;
}
.main {
    padding: 3em;
}

.cert_list {
	display: table;
	margin: 0 auto;
}

a:link {
  color: white;
}

a:visited {
  color: white;
}

ul#cert_ul {
	min-width: 696px;
	list-style: none;
	padding-top: 20px;
	}

ul#cert_ul li {
		display: inline;
		color: white;
        font-family: 'Courier New', monospace;
}