#contenedorform {
    width:500px; 
    margin-left:20px; 
    margin-top:10px;
    background-color:#ffe;
    border:1px solid #CCC;
    padding:10px 0 10px 0;
  }
  
  #contenedorform form label {
    width:120px; 
    float:left;
    font-family:verdana;
    font-size:14px;
  }
  .botonsubmit {
    color:#f00;
    background-color:#bbb;
    border: 1px solid #fff;
  }