* { margin:0; padding:0; }

body { background-color:#e2e2e2; }

#tudo { width:990px; height:555px; margin:0 auto; text-align:left; border:1px solid #999; border-top:0px; background:#fff; }

#imgAberturaTudo { width:980px; height:550px; margin:0 auto; text-align:left; } 
#imgAbertura01 { float:left; width:490px; height:275px; }
#imgAbertura02 { float:left; width:490px; height:275px; }
#imgAbertura03 { float:left; width:490px; height:275px; }
#imgAbertura04 { float:left; width:490px; height:275px; }