.banner_1 { width: 400px; margin-top: 0; margin-bottom: 10px; }
.banner_2 { width: 195px; height: 97px; float: left; margin: 0 0 12px; padding: 0; }
.banner_3 { width: 195px; height: 97px; float: right; margin: 0 0 12px 10px; padding: 0; }