#form_contato {
  width: 710px;
  font: normal 12px Tahoma;
  color: #000;
  margin: 30px;
  border: solid 1px #aaa;
  background: url(../img/icons/fundo_sistemas.jpg) repeat-x bottom;
}

.input_contato {
  width: 400px;
  background: #fff;
  border: solid 1px #888;
  color: #333;
}

#bt_contato {
  width: 100px;
  font: normal 12px Tahoma;
  background: #f5f5f5;
  border: solid 1px #111;
  color: #333;
  padding: 3px;
}