body { background-color:#FFDEAD; }
  div  { background-color:lightgreen; }
  .menu   { position:fixed;
            top:0;
            left:0;
            background-color:#FFDEAD;
            border:none;
            width:100%;
            height:30px; }
  .fundo1 { background-color:lightblue; }
  #fundo2 { background-color:red; }