#email_box {
  position:fixed;
  background-color:#ffffff;
  border:1px solid #aaaaaa;
  text-align:left;
  z-index:10;
  left:50%;
  top:50%;
  width:600px;
  height:auto;
  margin-left:-300px;
  margin-top:-150px;
}

#email_box .envia_button {
  background:url('../images/buttons/bt_enviar.jpg') no-repeat;
  cursor:pointer;
  width:115px;
  height:40px;
  border:0px;
}

#email_box .fechar_button {
  background:url('../images/buttons/bt_fechar.jpg') no-repeat;
  cursor:pointer;
  width:115px;
  height:40px;
  border:0px;
}

#email_box input {
  /* border:1px solid #000000;  assume ao estilo do imput do default.css*/
  margin:5px;
}