#btnMenu {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2;
  background-color: lime;
  width: 35px; 
  height: 35px;
}

nav {
	position: fixed;
	top: 0;
	background-color: transparent;
	color: #FFF000;
	text-align: left;
	line-height: 24px;
	width: 0;
	z-index: 1;
	left: 0;
	overflow-x: hidden;
	border: 1px solid red;
	border-radius: 10px;
}

nav li {
	list-style: none;
}

nav ul {
	margin: 0;
	padding: 0;
}

nav ul ul li a{
	padding-left: 25px;
}

nav a {
	display: block;
	padding-left: 5px;
	color: #000000;
	background-color: transparent;
}

nav a:hover {
	background-color: green;
	color: white;
	text-align: left;
	font-weight: bold;
	font-size: 16px;
}