body {margin: 0; padding: 0; }
#imSite {width: 1200px; margin: 15px auto; text-align: left; }
#imHeader {height: 100px; background-image: url('top.jpg'); background-repeat: no-repeat; }
#imBody {}
#imMenuMain {width: 148px; float: left; padding: 40px 0 0 20px; }
#imContent {width: 1012px; float: left; margin-top: 30px; }
#imFooter {clear: both; height: 1px; }