#fe-formulario {
  max-width: 600px;
  padding: 15px;
  background: #f8f8f8;
  border: 1px solid #ddd;
  border-radius: 8px;
}
#fe-formulario label {
  display: block;
  margin-top: 12px;
}
#fe-formulario select, #fe-formulario button {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
}