.cp_box *, .cp_box *:before, .cp_box *:after {
	-webkit-box-sizing: border-box;
	box-sizing: border-box;
}
.cp_box {
	position: relative;
  text-align: center;
}
.cp_box label {
	position: absolute;
  float: inline-start;
	z-index: 1;
	bottom: 0;
	/*height: 40px; /* グラデーションの高さ */
	cursor: pointer;
	text-align: center;
}
.cp_box input:checked + label {
	background: inherit; /* 開いた時にグラデーションを消す */
}
.cp_box label:after {
	line-height: 2.5rem;
	position: absolute;
	z-index: 2;
	bottom: 20px;
	left: 50%;
	width: 16rem;
	font-family: FontAwesome;
	content: '↓ open';
	transform: translate(-50%, 0);
	letter-spacing: 0.05em;
	color: #ffffff;
	border-radius: 20px;
	background-color: rgba(27, 37, 56, 1);
}
.cp_box input {
	display: none;
}
.cp_box .cp_container {
	overflow: hidden;
	height: 300px; /* 開く前に見えている部分の高さ */
	transition: all 0.5s;
}

.cp_box input:checked + label:after {
	content: '↑ close';
}
.cp_box input:checked ~ .cp_container {
	height: auto;
	padding-bottom: 80px; /* 閉じるボタンのbottomからの位置 */
	transition: all 0.5s;
}
.cp_container{
  margin-bottom: 3em;
}