* .clearfix:after 

{ clear: both; display: table; content: ''; }

{ font-size: 10pt; }

#body { margin: 0 auto; width: 1100px; }

#A>div {border: 1px lightgray solid; box-shadow: 2px 2px 2px #eee; width: 500px; height: 100px; float: left; margin-right: 10px; margin-top: 10px;}

#B>div {border: 1px lightgray solid; box-shadow: 2px 2px 2px #eee; width: 100px; height: 100px; float: left; margin-right: 10px; margin-top: 10px;}

#C>div {border: 1px lightgray solid; box-shadow: 2px 2px 2px #eee; width: 500px; height: 100px; float: left; margin-right: 10px; margin-top: 10px;}

#D>div {border: 1px lightgray solid; box-shadow: 2px 2px 2px #eee; width: 1012px; height: 75px; float: left; margin-right: 10px; margin-top: 10px;}

#E>div {border: 1px lightgray solid; box-shadow: 2px 2px 2px #eee; width: 788px; height: 100px; float: left; margin-right: 10px; margin-top: 10px;}