index.css

html,
body {
	padding: 0;
	margin: 0;
	background: transparent;
}

/* Use OS default fonts */
body {
	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue',
		sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
	text-rendering: optimizeLegibility;
	font-feature-settings: 'liga', 'clig', 'kern';
}

header {
	text-align: center;
}

header h1 {
	font-size: 50px;
	font-weight: 200;
	margin: 0;
	padding: 0;
	opacity: 0.7;
}
header h2,
h3 {
	width: 50%;
	display: inline;
}

header h2 {
	font-size: 30px;
}
header h3 {
	font-size: 15px;
}

.vertical-space {
	margin-top: 3px;
}

.horizontal-line {
	border-top: 3px solid #000000;
	margin-bottom: 1px;
}