<div class="cp_cont">
	<div class="cp_offcm01">
		<input type="checkbox" id="cp_toggle01">
		<label for="cp_toggle01"><span></span></label>
		<div class="cp_menu">
		<ul>
		<li><a href="#">menu1</a></li>
		<li><a href="#">menu2</a></li>
		<li><a href="#">menu3</a></li>
		<li><a href="#">menu4</a></li>
		<li><a href="#">menu5</a></li>
		</ul>
		</div>
	</div>
	<div class="cp_contents">
		<h1>contents</h1>
		</div>
	</div>
</div>

*, *:before, *:after {
	padding: 0;
	margin: 0;
	box-sizing: border-box;
}
ol, ul {
	list-style: none;
}
a {
	text-decoration: none;
	color: inherit;
}
.cp_cont {
	height: 65vh;
}
.cp_offcm01 {
	position: absolute;
	top: 20px;
	right: 20px;
	display: inline-block;
}
/* menu */
.cp_offcm01 .cp_menu {
	position: fixed;
	top: 0;
	right: -100vw;
	width: 250px;
	height: 100%;
	cursor: pointer;
	-webkit-transition: 0.53s transform;
	        transition: 0.53s transform;
	-webkit-transition-timing-function: cubic-bezier(.38,.52,.23,.99);
	        transition-timing-function: cubic-bezier(.38,.52,.23,.99);
	background-color: #607D8B;
	opacity: 0.8;
}
.cp_offcm01 .cp_menu ul {
	margin: 0;
	padding: 0;
}
.cp_offcm01 .cp_menu li {
	list-style: none;
}
.cp_offcm01 .cp_menu li a {
	display: block;
	padding: 20px;
	text-decoration: none;
	color: #ffffff;
	border-bottom: 1px solid #ffffff;
}

.cp_offcm01 #cp_toggle01 {
	position: absolute;
	display: none;
	opacity: 0;
}
.cp_offcm01 #cp_toggle01:checked ~ .cp_menu {
	-webkit-transform: translateX(-100vw);
	        transform: translateX(-100vw);
}
/* menu toggle */
.cp_offcm01 #cp_toggle01 ~ label {
	display: block;
	padding: 0.5em;
	cursor: pointer;
	-webkit-transition: 0.5s transform;
	        transition: 0.5s transform;
	-webkit-transition-timing-function: cubic-bezier(.61,-0.38,.37,1.27);
	        transition-timing-function: cubic-bezier(.61,-0.38,.37,1.27);
	text-align: center;
	color: #333333;
}
.cp_offcm01 #cp_toggle01:checked ~ label {
	-webkit-transform: translateX(-250px);
	        transform: translateX(-250px);
}
.cp_offcm01 #cp_toggle01 ~ label::before {
	font-family: 'FontAwesome';
	content: '\f0c9';
	font-size: 2em
}
.cp_offcm01 #cp_toggle01:checked ~ label::before {
	content: '\f00d';
}
/* contents */
.cp_contents {
	color: #333333;
	text-align: center;
}