.lower{
   background: transparent none repeat scroll 0 0;
    border: medium none;
    box-shadow: 0 0;
    color: #000;
    float: right;
    font-size: 18px;
    margin: 54px 0 0;
    opacity: 0.8;
    padding: 0;
    width: auto;
}

.overlay nav li a {
    font-size: 35px;
    font-weight: bold !important;
    line-height: 40px;
}
.lower .fa.fa-bars {
    border: 1px solid;
    border-radius: 18px;
    text-align: center;
    width: 33px;
}
#op {
    display: none;
}
.lower label {
    font-family: "Hind",sans-serif;
    font-weight: 100;
}
.lower input{
  display:none;
}

.lower label:hover{
  cursor:pointer;
}

.overlay{
	position: fixed;
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
	background: rgba(0,0,0,0.9);
}

.overlay label{
	width: 58px;
	height:58px;
	position: absolute;
	right: 20px;
	top: 20px;
	background: url('https://tympanus.net/Development/FullscreenOverlayStyles/img/cross.png');
	z-index: 100;
  cursor:pointer;
}

.overlay nav {
	text-align: center;
	position: relative;
	top: 50%;
	height: 60%;
	font-size: 54px;
	-webkit-transform: translateY(-50%);
	transform: translateY(-50%);
}

.overlay ul {
	list-style: none;
	padding: 0;
	margin: 0 auto;
	display: inline-block;
	height: 100%;
	position: relative;
}

.overlay ul li a {
	font-weight: 300;
	display: block;
	color: white;
  text-decoration:none;
	-webkit-transition: color 0.2s;
	transition: color 0.2s;
  font-family: "Gotham SSm A","Gotham SSm B",Arial,sans-serif;
  text-transform:uppercase;
}

.overlay ul li a:hover,
.overlay ul li a:focus {
	color: #23527C;
}

.lower~.overlay-hugeinc{
	opacity: 0;
	visibility: hidden;
	-webkit-transition: opacity 0.5s, visibility 0s 0.5s;
	transition: opacity 0.5s, visibility 0s 0.5s;
}

#op:checked~.overlay-hugeinc{
	opacity: 1;
	visibility: visible;
	-webkit-transition: opacity 0.5s;
	transition: opacity 0.5s;
}

.overlay-hugeinc nav {
	-moz-perspective: 300px;
}

.overlay-hugeinc nav ul {
	opacity: 0.4;
	-webkit-transform: translateY(-25%) rotateX(35deg);
	transform: translateY(-25%) rotateX(35deg);
	-webkit-transition: -webkit-transform 0.5s, opacity 0.5s;
	transition: transform 0.5s, opacity 0.5s;
}

#op:checked~.overlay-hugeinc nav ul {
	opacity: 1;
	-webkit-transform: rotateX(0deg);
	transform: rotateX(0deg);
}

#op:not(:checked)~.overlay-hugeinc nav ul {
	-webkit-transform: translateY(25%) rotateX(-35deg);
	transform: translateY(25%) rotateX(-35deg);
}