/* CSS レイアウト */
#masthead {
	text-align:left;
	font-size:medium;
	font-weight:bold;
	color:black;
}
#top_nav {
}
#page_content {
}
#footer {
}

img{width:100%;height:auto;max-width:500px;}

h1 {
	text-align:left;
	font-size:medium;
	font-weight:bold;
	color:black;
}
h2 {
    text-align:left;
	font-size:medium;
	font-weight:bold;
	color:black;
}
h3 {
    text-align:left;
	font-size:medium;
	font-weight:bold;
	color:black;
}