body>h1{
        text-align: center;
}
#menu{
	display: flex;
	flex-wrap: wrap;
	padding: 20px;
        justify-content: center;
}
#GitHub {
	height: 1rem;
	vertical-align: middle;
}
@media (max-width: 640px) {
	#menu{
		flex-direction:column;
	}
}
#menu li{
	list-style-type: none;
	padding: 5px;
	text-align: center;
	background-color: #F8F8FF;
	border: solid 1px #8080D0;
}
#menu li a{
	display: block;
}

#container{
	display: flex;
	flex-wrap: wrap;
}

#left{
	width: 600px;
}

.content_list{
	padding:0;
}

.content_list > li{
	list-style: none;
	border: solid 1px #8080D0;
	margin: 20px;
}

div{
	border: solid 1px #8080D0;
	margin: 20px;
	padding: 10px;
}

#faq dd{
	margin-bottom: 20px;
	background-color: #EEEEFF;
}

.image_list{
	list-style :none;
	display: flex;
	flex-wrap: wrap;
}
.image_list li{
	padding-right: 20px;
	width: 300px;
}