nav {
    background-color: rgb(28, 87, 129);
    color: white;
    font-family: sans-serif;
    width: 51rem;
    position: relative;
    top: 0;
    left: 15px;
}
nav>ul {
	list-style: none;
	cursor: pointer;
}
nav>ul>li {
	display: inline-block;
	vertical-align: top;
	position: relative;
	overflow: hidden;
	margin: 1em;
}
nav>ul>li:hover {
	overflow: visible;
}
nav>ul>li>ul {
    list-style: none;
    position: absolute;
    background-color: #FFFFFF;
}
nav>ul>li>ul>li {
	margin: 1em;
	white-space: nowrap;
}