body {
	font-family: system-ui; sans-serif;
	font-size: 100%;
	line-height: 1.4em;
}

p {
	text-indent: 0;
}

ul.top-nav {
	list-style: none;
	padding: 1em;
	padding-left: 0;
} 

ul.top-nav li {
	outline: 1px dotted purple;
	width: 25%;
	float: left;
}

main {
	clear: left;
}