* {
	margin: 0px;
	padding: 0px;
}

header {
	position: relative;
	width: 820px;
	height: 321px;
	margin: 0 auto;
}
header .logo {
	position: absolute;
}
header .btn {
	position: absolute;
	bottom: 37px;
	right: 0px;
	z-index: 1000;
}
#main {
	width: 820px;
	margin: 0 auto;
}
#picture {
	overflow: hidden;
	margin: 10px 0 100px 0;
}
#picture li {
	list-style: none;
	float: left;
	margin: 0 10px 10px 0;
}
#picture li.last {
	margin: 0;
}



/* @media only screen and (max-width: 641px) { */
@media only screen and (max-width: 641px) {

body {
	min-height: 480px;
}
img {
	max-width: 100%;
	height: auto;
}
header {
	width: 320px;
	height: 125px;
}
header .logo {
	width: 320px;
}
header .btn {
	width: 100px;
	bottom: 10px;
}
iframe {
	width: 320px;
	height: 180px;
}

#main {
	width: 320px;
}
#picture li img {
	width: 100px;
}

#picture li.last {
	margin: 0 8px 0 0;
}
#picture li {
	margin: 0 8px 0 0;
}
#picture li.last_sp {
	margin: 0;
}


}