/*開閉用ボタン（ハンバーガーボタン）*/
.menu-btn {
	position: fixed;
	top: 18px;
	right: 3%;
	width: 50px;
	height: 50px;
	border-radius: 50%;
	cursor: pointer;
	z-index: 101;
	background-color:#333333;
	-webkit-transition: all 3s ease-in-out;
	transition: all .3s ease-in-out;
}
.menu-btn-line {
	position: absolute;
	top: 0;
	bottom: 0;	
	left: 0;
	right: 0;
	margin: auto;
	height: 1px;
	width: 30%;
	background: #ffffff;
	-webkit-transition: all 3s ease-in-out;
	transition: all .3s ease-in-out;
}
.menu-btn-line::before,
.menu-btn-line::after {
	content: "";
	height: 1px;
	width: 100%;
	background: #ffffff;
	position: absolute;
	left: 0;
	-webkit-transition: inherit;
	transition: inherit;
}
.menu-btn-line::before{
	top: -5px;
}
.menu-btn-line::after{
	top: 5px;
}

/* 開閉用ボタンがクリックされた時のスタイル */
.open .menu {
   -webkit-transition: all .5s;
	transition: all .5s;
	visibility: visible;
	opacity: 1;
	opacity:0.98;
}
.open .menu-btn {
	border-color:#ffffff;
}
.open .menu-btn-line{
	background-color: transparent;
}
.open .menu-btn-line::before,
.open .menu-btn-line::after {
	top: 0;
	background: #fff
}
.open .menu-btn-line::before {
	-webkit-transform: rotate(45deg);
	-ms-transform: rotate(45deg);
	transform: rotate(45deg);
}
.open .menu-btn-line::after {
	-webkit-transform: rotate(-45deg);
	-ms-transform: rotate(-45deg);
	transform: rotate(-45deg);
}
		
/*開いたメニュー*/
.menu {
	position: fixed;
	display: flex;
	justify-content: center;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: rgba(70,70,70,.9);
	-webkit-transition: all .5s;
	transition: all .5s;
	visibility: hidden;
	opacity: 0;
	z-index: 100;
}
.menu ul {
	transform: translateY(15%);
	padding: 0;
	list-style-type: none
}
.menu li {
	width: 100%;
	height: 50px;
	line-height: 50px;
	text-align: center;
}
.menu li a {
	display: block;
	font-size:1.2em;
	font-weight:normal;
	color: #ffffff;
	text-decoration: none;
	-webkit-transition: all .2s;
	transition: all .2s;
}
.menu li a:hover {
	transform: translateX(5px);
	-webkit-transition: all .2s;
	transition: all .2s;
}

article {
	height: 80vh;
	border-bottom: solid 5px
}