diff --git a/Configuracion.php b/Configuracion.php
index 7dc2e83..e2e32ca 100644
--- a/Configuracion.php
+++ b/Configuracion.php
@@ -118,23 +118,23 @@
             $personal=$this->estilo=="personal"?'selected':' ';
             $bluecurve=$this->estilo=="bluecurve"?'selected':' ';
             $cristal=$this->estilo=="cristal"?'selected':' ';
-            $salida='<center><form name="configura" method="post">';
+            $salida='<center><div class="col-sm-2 col-md-6"><form name="configura" method="post">';
             //$salida.='<p align="center"><table border=1 class="tablaDatos"><tbody>';
             $salida.='<p align="center"><table border=2 class="table table-hover"><tbody>';
-            $salida.='<th colspan=2><b>Preferencias</b></th>';
+            $salida.='<th colspan=2 class="info"><center><b>Preferencias</b></center></th>';
             $salida.='<tr><td>Nombre del Centro</td><td><input type="text" name="centro" value="'.$this->nombreCentro.'" size="30" /></td></tr>';
             $salida.='<tr><td>N&uacute;mero de filas</td><td><input type="text" name="filas" value="'.$this->numFilas.'" size="3" /></td></tr>';
             $salida.='<tr><td>Estilo</td><td><select name="estilo">';
             $salida.='<option value="personal" '.$personal.'>personal</option>';
             $salida.='<option '.$bluecurve.'>bluecurve</option>';
             $salida.='<option '.$cristal.'>cristal</option></select></td></tr>';
-            $salida.='<th colspan=2><b>Base de datos</b></th>';
+            $salida.='<th colspan=2 class="danger"><center><b>Base de datos</b></center></th>';
             $salida.='<tr><td>Servidor</td><td><input type="text" name="servidor" value="'.$this->servidor.'" size="30" /></td></tr>';
             $salida.='<tr><td>Base de datos</td><td><input type="text" name="baseDatos" value="'.$this->baseDatos.'" size="30" /></td></tr>';
             $salida.='<tr><td>Usuario</td><td><input type="text" name="usuario" value="'.$this->usuario.'" size="30" /></td></tr>';
             $salida.='<tr><td>Clave</td><td><input type="text" name="clave" value="'.$this->clave.'" size="30" /></td></tr>';
             $salida.='<tr align=center><td colspan=2><input type="submit" class="btn btn-primary" align="center" value="Aceptar" name="aceptar" /></td></tr></p>';
-            $salida.='</form></center>';
+            $salida.='</form></div></center>';
             return $salida;
         }
     }
diff --git a/InformeInventario.php b/InformeInventario.php
index f6fd26c..ae83592 100644
--- a/InformeInventario.php
+++ b/InformeInventario.php
@@ -143,7 +143,7 @@ class InformeInventario {
     }
 
     private function formulario($accion, $etiqueta, $lista) {
-        $salida = '<form name="informeInventario.form" method="post" action="' . $accion . '">' . "\n";
+        $salida = '<div class="col-sm-2 col-md-6"><form name="informeInventario.form" method="post" action="' . $accion . '">' . "\n";
         $salida.="<fieldset style=\"width: 96%;\"><p><legend style=\"color: red;\"><b>Elige $etiqueta</b></legend>\n";
         $salida.="<br><br><label>$etiqueta</label>";
         $salida.=$lista;
@@ -151,7 +151,7 @@ class InformeInventario {
         $salida.='<div class="radio"><label><input type="radio" name="salida" value="pantalla" checked>Pantalla</label></div>';
         $salida.='<div class="radio"><label><input type="radio" name="salida" value="Hoja de cálculo">Hoja de c&aacute;lculo</label></div>';
         $salida.="<br><br></fieldset><p>";
-        $salida.='<p align="center"><button type=submit class="btn btn-primary">Aceptar</button></p><br>' . "\n";
+        $salida.='<p align="center"><button type=submit class="btn btn-primary">Aceptar</button></p><br></div>' . "\n";
         return $salida;
     }
 
diff --git a/Mantenimiento.php b/Mantenimiento.php
index 8493b86..3c492a0 100644
--- a/Mantenimiento.php
+++ b/Mantenimiento.php
@@ -414,10 +414,11 @@ class Mantenimiento {
                     $this->campoBusca = $dato[1];
                 }
             }
+            $clave = str_ireplace("descripcion", "Descripci&oacute;n", $clave);
             if ($ordenable) {
-                $salida.="<th><b><a title=\"Establece orden por $clave \" href=\"$this->url&orden=" . strtolower($clave) . "\"> $clave </a></b></th>\n";
+                $salida.="<th><b><a title=\"Establece orden por $clave \" href=\"$this->url&orden=" . strtolower($clave) . "\"> ".ucfirst($clave)." </a></b></th>\n";
             } else {
-                $salida.='<th><b>' . $clave . '</b></th>' . "\n";
+                $salida.='<th><b>' . ucfirst($clave) . '</b></th>' . "\n";
             }
         }