*{
	margin: 0;
	padding: 0;
	border-image: none;
}
body{
	background: url(../img/bgimg.png) no-repeat;
}
.aa img,.gg img{
	width: 1920px;
}
.aa{
	width: 100%;
	height: 718px;
}
.bb,.cc,.dd,.ee,.ff{
	width: 1245px;
	margin: 0 auto;
}
.bb{
	height: 595px;
}
.cc,.dd,.ee{
	height: 565px;
}
.ff{
	height: 570px;
}
.gg{
	width: 100%;
	height: 882px;
}