.mainblur{
	filter: blur(8px);
}

#topnav{
    position:fixed;
	z-index: -1;
	opacity: 0;
	top:0;
	width:100%;
    height: 100%;
	background:rgba(255,255,255,0.3);
	transition: all 0.3s;
}

#topnav.panelactive{
	opacity: 1;
	z-index:999;
}

#topnav.panelactive #topnav-list{
    position: fixed;
    z-index: 999; 
    width: 100%;
    height: 100vh;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}

#topnav ul {
    display: none;
    position: absolute;
    z-index: 999;
    top:50%;
    left:50%;
    transform: translate(-50%,-50%);
}

#topnav.panelactive ul {
    display: block;
}


#topnav li{
	list-style: none;
    text-align: center; 
}

#topnav li a{
	color: #333;
	text-decoration: none;
	padding:10px;
	display: block;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	font-weight: bold;
}

.topnavbtn{
	position:fixed;
    z-index: 9999;
	top:10px;
	right: 10px;
	cursor: pointer;
    width: 50px;
    height:50px;
}

.topnavbtn span{
    display: inline-block;
    transition: all .4s;
    position: absolute;
    left: 14px;
    height: 3px;
    border-radius: 2px;
	background-color: #666;
  	width: 45%;
  }

.topnavbtn span:nth-of-type(1) {
	top:15px;	
}

.topnavbtn span:nth-of-type(2) {
	top:23px;
}

.topnavbtn span:nth-of-type(3) {
	top:31px;
}

.topnavbtn.active span:nth-of-type(1) {
    top: 18px;
    left: 18px;
    transform: translateY(6px) rotate(-45deg);
    width: 30%;
}

.topnavbtn.active span:nth-of-type(2) {
	opacity: 0;
}

.topnavbtn.active span:nth-of-type(3){
    top: 30px;
    left: 18px;
    transform: translateY(-6px) rotate(45deg);
    width: 30%;
}