body {
	font-family: system-ui, sans-serif ;
	font-size: 100% ;
	line-height: 135% ;
} 

ul.nav {
	outline: 1px dotted red;
	Padding: 0;
	list-style: none;
	overflow: hidded;
}

ul.nav li {
	width:20% ;
	outline:1px dashed green;
	float: left;
	margin:0 1em;
}

main {
	clear: both;
}
.first-form fieldset {
	margin: 1.35rem 0 2rem 0;
	border-radius: 8px;
}

.first-form fieldset:first-child label {
	display: block;
	width: 8em;
	float: left;
}
.first-form fieldset:first-child input {
	display: block;
	width: 12em;
}

section:last-child p {
	width: 32%;
	float: left;
	
}
footer {
	clear: left;
}


/* preferred method
.first-form fieldset legend {
	
}
	margin: 0 .5em;
}

.first-form fieldset:first-child label {
	display: inline-block; 
	width: 6em;
}