.nav_open{
    width: 45px;
    height: 45px;
    border: 0px;
    cursor: pointer;
    padding: 5px;
    z-index: 998;
    position: absolute;
    right: 3%;
	top:0;
    background-color: rgba(255, 255, 255, 0);
}

.nav_open img{ width: 100%;}


/* Overlay style */
.overlay {
	position: fixed;
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
	background: rgba(1, 180, 238, 0.95);	
	z-index: 9999;
}

/* Overlay closing cross */
.overlay .overlay-close {
	width: 50px;
	height: 50px;
	position: absolute;
	right: 3%;
	top: 3%;
	overflow: hidden;
	border: none;
	background: url(../images/win_close.png) no-repeat center center;	
	text-indent: 200%;
	color: transparent;
	outline: none;
	z-index: 999;
}

/* Menu style */
.overlay nav {
	text-align: center;
	position: relative;
	top: 40%;
	height: 60%;
	-webkit-transform: translateY(-50%);
	transform: translateY(-50%);
	z-index:70;
}

.overlay ul {
	width:80%;
	list-style: none;
	padding: 0;
	margin: 0% auto;
	display: block;
	height: 100%;
	position: relative;
}

.overlay ul li {
	display: block;
	/*height: 25%;*/
	/*height: calc(100% / 5);*/
	/*min-height: 50px;*/
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden; text-decoration:none;
	margin: 2% 0;
	padding: 0 0;
	text-align: center;
	
}

.overlay ul li a { display:block;
	font-family:"微軟正黑體", "新細明體", "標楷體", Arial, "Arial Black";
	font-size: 20px;
	font-weight: 600;
	display: block;
	color: #34c3f1;
	text-decoration:none;
	-webkit-transition: color 0.2s;
	transition: color 0.2s;
	/*height:40px;*/
	line-height:20px;
    border: 1px solid #FFF;
    border-radius:50px;
    margin:0% 0;
	padding:5% 0;
	background:rgba(255,255,255,0.95)
}

.overlay ul li img{ width:100%; height:auto; min-width:160px; margin: 0 auto;}

.overlay ul li a:hover,
.overlay ul li a:focus {
	color: #ac0000;
}

/* Effects */
.overlay-slidedown {
	visibility: hidden;
	-webkit-transform: translateY(-100%);
	transform: translateY(-100%);
	-webkit-transition: -webkit-transform 0.4s ease-in-out, visibility 0s 0.4s;
	transition: transform 0.4s ease-in-out, visibility 0s 0.4s;
	z-index:998;
}

.overlay-slidedown.open {
	visibility: visible;
	-webkit-transform: translateY(0%);
	transform: translateY(0%);
	-webkit-transition: -webkit-transform 0.4s ease-in-out;
	transition: transform 0.4s ease-in-out;
}



@media screen and (max-height: 30.5em) {
	.overlay nav {
		height: 70%;
		font-size: 34px;
	}
	.overlay ul li {
		min-height: 34px;
	}
}