* {margin: 0; padding: 0;}

body {
	font-family: 'Lucida Grande', helvetica, arial, sans-serif;
	font-size: 12px;
	background: gray;
}

#div {
width: 80%;
margin: 3em auto;
}

header {
background: yellow;
width: 100%;
height: auto;
float: left;

}

header>nav{
text-align: right;
display: inline;
border: none;
float: right;
width: 50%;

}

nav li {
color: black;
list-style-type: none;
display: inline;
font-family: Arial, Century Gothic, sans serif;
font-size: 1em;
padding: 5px 10px;
border: 2px black dashed;
background-color: green;
}

section