.wrapper {
	margin: 0 auto;
	padding: 0 30px;
	max-width: 1200px;
}
ul {
	margin: 0;
	padding: 0;
}
ul li {
	margin: 0;
	padding: 0;
	list-style-type: none;
}
img {
	max-width: 100%;
}
section {
	margin-bottom: 100px;
	padding-bottom: 100px;
	border-bottom: 1px solid #000;
}
.image ul {
	display: flex;
	justify-content: space-between;
	flex-wrap: wrap;
}
.image ul::after {
	width: 32%;
	content: "";
}
.image ul li {
	width: 32%;
}
.national_flag .image ul li img {
	border: 1px solid #333;
}
.text {
	font-size: 3rem;
}
.open {
	margin-top: 30px;
	padding: 20px;
	border: 2px solid #000;
	text-align: center;
	cursor: pointer;
}
.answer {
	display: none;
}

.list {
	display: flex;
	flex-wrap: wrap;
}
.list li {
	margin: 0 0.5em 0.5em 0;
	padding-right: 0.5em;
	border-right: 1px solid #000;
}

.clearBtn {
	padding: .5em 1em;
	border-radius: 5px;
	display: inline-block;
	color: #fff;
	background-color: #333;
	cursor: pointer;
}
.clearBtn.clicked {
	background-color: #999;
	pointer-events: none;
}

@media screen and (max-width: 750px) {
	.wrapper {
		margin: 0 auto;
		padding: 0;
		width: 90%;
	}
	section {
		margin-bottom: 100px;
		padding-bottom: 100px;
		border-bottom: 1px solid #000;
	}
	.image ul {
		display: block;
	}
	.image ul::after {
		display: none;
	}
	.image ul li {
		margin-bottom: 10px;
		width: auto;
	}
}