.pb_mainBg{
	width: 100%;
	float: left;
	min-width: 1200px;
	padding: 0;
	background: url(../images/ov_pb_bg.gif) center bottom repeat-x;
}
.pb_main{
	width: 1200px;
	margin: 0 auto;
}
pb_content{
	width: 100%;
	float: left;
	padding: 20px 0;
}
.pb_text{
	width: 85%;
	float: left;
	padding: 0 0 0 50px;
}
.pb_content .img{
	width: 100%;
	float: left;
	text-align: center;
	padding: 20px 0 70px 0;
}
@media screen and (min-width: 768px) and (max-width: 1024px) {
.pb_mainBg{
	min-width: 1000px;
}
.pb_main{
	width: 970px;
	padding: 0 15px;
}
}
@media screen and (min-width: 320px) and (max-width: 768px) {
.pb_mainBg{
	min-width: 320px;
}
.pb_main{
	width: 90%;
	padding: 0 5%;
}
.pb_text{
	width: 100%;
	padding: 0;
}
.pb_content .img img{
	width: 100%;
	height: auto;
}
}