.main_r_con { width:748px; height:100%; margin:0 auto;}
.main_r_con dd { display:block; width:650px; height:100%; margin:0 auto; padding-top:20px; line-height:20px; line-height:30px;}
.main_r_con dd h3 { text-align:center;} 

.image_content { width:650px; text-align:center;}
.image_content img { width:400px; text-align:center;}
.image_con { width:650px; line-height:28px; text-align:left; margin-top:5px;}