index.css

body {
	margin-left: calc(20%);
	max-width: 800px;
	width: 70%;
	font-family: Helvetica, Arial, sans-serif;
	font-size: 14px;
	line-height: 19px;
}

h1, h2, h3, h4, h5, h6 {
	margin-top: 30px;
	margin-bottom: 10px;
}

h1+p, h2+p, h3+p, h4+p, h5+p, h6+p {
	margin-top: 0px;
}

li > p {
	margin-top: 0px;
	margin-bottom: 0px;
}

img {
	max-width: 100%;
}

ul {
	padding-left: 1em;
}

img[src$=".svg"] {
	min-width: 150px;
}

.ribbon {
	position: fixed;
	right: -5px; top: -5px;
	z-index: 1;
	overflow: hidden;
	width: 150px; height: 150px;
	text-align: right;
}
.ribbon span {
	font-weight: bold;
	color: #FFF;
	text-transform: uppercase;
	text-align: center;
	line-height: 40px;
	transform: rotate(45deg);
	-webkit-transform: rotate(45deg);
	width: 200px;
	display: block;
	background: #79A70A;
	background: linear-gradient(#05EFF7 0%, #087F8F 100%);
	box-shadow: 0 3px 10px -5px rgba(0, 0, 0, 1);
	position: absolute;
	top: 40px; right: -42px;
}
.ribbon a {
	color: white;
	text-decoration: none;
}

a, a:active, a:hover, a:visited {
	text-decoration: none;
	color: #08c;
}