Buenas, porquee no me responden los botones de submit y reset?
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
?>
<div class="content-wrapper">
<!-- Content Header (Page header) -->
<div class="content-header">
<div class="container-fluid">
<div class="row">
<div class='col-4 offset-4' align='center'>
<!-- /.row (main row) -->
<p class='display-5'><?php echo TITLE.' - '.VERSION; ?></p>
<img src="assets/imagenes/dollar-symbol-3.png" alt="AdminLTE Logo" width="110" height="110" style="opacity: .4">
</div>
</div>
<div class='row'>
<div class='col-4 offset-4' align='center'>
<forn method='post' action=<?php echo base_url(); ?>'main'>
<div class='card' style="width: 25rem;">
<h5 class="card-title"> Ingreso </h5>
<div class='card-body' align='center'>
<input type='text' value='Usuario: ' readonly size='5' class='inputlogin'>
<input type='text' name='nombre' size='20' class="form-control-fixed" placeholder='Nombre de Usuario'><br>
<input type='input' value='Clave: ' class='inputlogin' readonly size='5'>
<input type='password' name='password' size='20' class="form-control-fixed" placeholder='Clave'><br>
<hr style='height: .25em'>
<button type='submit' class='btn btn-primary'>Ingresar</button>
<button type='reset' class='btn btn-danger'>Cancelar</button>
</div>
</div>
</forn>
</div><!-- /.container-fluid -->
</div>
</div>
</div>