@charset �hutf-8�h; 

#wrapper{
width:640px;
margin:200px auto 0;
}
#left-container{
width:300px;
float:left;
}
#right-container{
width:300px;
float:right;
}
a{display:block;}
a:hover img{
	-ms-filter: "alpha( opacity=70 )"; /* “§–¾“x */
	filter: alpha( opacity=70 ); /* “§–¾“x */
	opacity: 0.7; /* “§–¾“x */
	}