#coluna-central{  width:500px;  min-height:45px;  float:left;  margin-left:6px;  margin-bottom:10px;}#coluna-direita {  width:190px;  float:left;  padding-left:10px;  margin-left:6px;  margin-bottom:10px;}#coluna-esquerda {  width:190px;  float:left;  padding-left:10px;  margin-left:6px;  margin-bottom:10px;}