.main{  background-position: bottom; float:right; }

#main{ float:left}
td{ font-size:16px;}
#table1{
    border:5px solid #FF00FF;
}

body{ background-color:#c3c3c3; width:500px;}
#main{ background-color:#FFFFFF; border:1px solid #FF0000; padding:10px; text-align:center;}
#table2{
    border:5px solid #FF00FF;
}