diff --git a/src/main/java/com/example/proyectofinal/models/empresas/Alumno.java b/src/main/java/com/example/proyectofinal/models/empresas/Alumno.java
index 4c106a5..7411e44 100644
--- a/src/main/java/com/example/proyectofinal/models/empresas/Alumno.java
+++ b/src/main/java/com/example/proyectofinal/models/empresas/Alumno.java
@@ -47,7 +47,7 @@ public class Alumno {
     private String nia;
 
     @NonNull
-    @Column(length = 8)
+    @Column(length = 9)
     private String dni;
 
     @NonNull
diff --git a/src/main/resources/templates/admin/alumno/create.html b/src/main/resources/templates/admin/alumno/create.html
index c755074..c8eb849 100644
--- a/src/main/resources/templates/admin/alumno/create.html
+++ b/src/main/resources/templates/admin/alumno/create.html
@@ -64,14 +64,14 @@
         <div class ="form-group row">
             <label class="col-sm-3 col-form-label" for="nia">Nia</label>
             <div class = "col-sm-9">
-                <input type="text" th:field="*{nia}"   required minlength="8" maxlength="8" title="Entra un nia correcto" class="form-control" id="nia">
+                <input type="text" th:field="*{nia}" required pattern="^\d{8}$" title="Entra un nia correcto" class="form-control" id="nia">
             </div>
         </div>
 
         <div class="form-group row">
             <label class="col-sm-3 col-form-label" for="dni">DNI/NIE</label>
             <div class="col-sm-9">
-                <input type="text" th:field="*{dni}" required minlength="8" maxlength="8" class="form-control" id="dni" title="Introduce DNI/NIE">
+                <input type="text" th:field="*{dni}" required pattern="^[XYZ]?\d{7,8}[A-Za-z]$" title="Introduce DNI/NIE" class="form-control" id="dni">
             </div>
         </div>
 
diff --git a/src/main/resources/templates/admin/alumno/update.html b/src/main/resources/templates/admin/alumno/update.html
index 84c4904..40a5646 100644
--- a/src/main/resources/templates/admin/alumno/update.html
+++ b/src/main/resources/templates/admin/alumno/update.html
@@ -64,14 +64,14 @@
         <div class ="form-group row">
             <label class="col-sm-3 col-form-label" for="nia">Nia</label>
             <div class = "col-sm-9">
-                <input type="text" th:field="*{nia}"   required minlength="8" maxlength="8" title="Entra un nia correcto" class="form-control" id="nia">
+                <input type="text" th:field="*{nia}" required pattern="^\d{8}$" title="Entra un nia correcto" class="form-control" id="nia">
             </div>
         </div>
 
         <div class="form-group row">
             <label class="col-sm-3 col-form-label" for="dni">DNI/NIE</label>
             <div class="col-sm-9">
-                <input type="text" th:field="*{dni}" required minlength="8" maxlength="8" class="form-control" id="dni" title="Introduce DNI/NIE">
+                <input type="text" th:field="*{dni}" required pattern="^[XYZ]?\d{7,8}[A-Za-z]$" title="Introduce DNI/NIE" class="form-control" id="dni">
             </div>
         </div>
 
diff --git a/src/main/resources/templates/admin/contacto/update.html b/src/main/resources/templates/admin/contacto/update.html
index 2175a61..f06c89f 100644
--- a/src/main/resources/templates/admin/contacto/update.html
+++ b/src/main/resources/templates/admin/contacto/update.html
@@ -12,7 +12,7 @@
     <style></style>
 </head>
 <body>
-<h1>Editar datos de Empresa<a href="/logout" class="logout-button"><i class="fas fa-door-open"></i></a></h1>
+<h1>Editar datos de Contacto<a href="/logout" class="logout-button"><i class="fas fa-door-open"></i></a></h1>
 
 <form th:action="@{/contacto/update}" method="post" enctype="multipart/form-data" th:object="${contacto}">
     <input type="hidden" th:field="*{id}"/>
diff --git a/src/main/resources/templates/admin/sucursal/create.html b/src/main/resources/templates/admin/sucursal/create.html
index 3fe6d31..b6a5618 100644
--- a/src/main/resources/templates/admin/sucursal/create.html
+++ b/src/main/resources/templates/admin/sucursal/create.html
@@ -12,7 +12,7 @@
     <style></style>
 </head>
 <body>
-<h1>Añadir Empresa<a href="/logout" class="logout-button"><i class="fas fa-door-open"></i></a></h1>
+<h1>Añadir Sucursal<a href="/logout" class="logout-button"><i class="fas fa-door-open"></i></a></h1>
 
 <form th:action="@{/sucursal/save}" method="post" enctype="multipart/form-data" th:object="${sucursal}">
     <!--<input type="hidden" th:field="*{id}"/>-->
diff --git a/src/main/resources/templates/admin/sucursal/update.html b/src/main/resources/templates/admin/sucursal/update.html
index 314260a..4bfcc87 100644
--- a/src/main/resources/templates/admin/sucursal/update.html
+++ b/src/main/resources/templates/admin/sucursal/update.html
@@ -12,7 +12,7 @@
     <style></style>
 </head>
 <body>
-<h1>Editar datos de Empresa<a href="/logout" class="logout-button"><i class="fas fa-door-open"></i></a></h1>
+<h1>Editar datos de Sucursal<a href="/logout" class="logout-button"><i class="fas fa-door-open"></i></a></h1>
 
 <form th:action="@{/sucursal/update}" method="post" enctype="multipart/form-data" th:object="${sucursal}">
     <input type="hidden" th:field="*{id}"/>
@@ -82,7 +82,7 @@
                 data: formData,
                 success: function (message) {
                     if(message === "Los datos del sucursal fue renovados con exito") {
-                        alert("Los datos del sucursal fue renovada con exito")
+                        alert("Los datos del sucursal fue renovados con exito")
                         window.history.go(-1); // Go back two pages
                     }else if(message === "Ya existe una sede central"){
                         alert("Ya existe una sede central");
diff --git a/src/main/resources/templates/list/ofertas.html b/src/main/resources/templates/list/ofertas.html
index bb9224e..e314534 100644
--- a/src/main/resources/templates/list/ofertas.html
+++ b/src/main/resources/templates/list/ofertas.html
@@ -11,7 +11,8 @@
     <title>Lista Ofertas</title>
     <style>
         .table td.scrollable-cell .skill-cell {
-            max-height: 50px!important;
+            width: 250px;
+            min-height: 50px;
         }
     </style>
 </head>
diff --git a/src/main/resources/templates/list/sucursales.html b/src/main/resources/templates/list/sucursales.html
index d84ce4c..b482dbc 100644
--- a/src/main/resources/templates/list/sucursales.html
+++ b/src/main/resources/templates/list/sucursales.html
@@ -17,7 +17,7 @@
 <div class="header">
     <h1>
         <i class="fas fa-arrow-left" onclick="goBack()" style="cursor:pointer;"></i>
-        Listado de Ofertas
+        Listado de Sucursales
     </h1>
     <a href="/logout" class="logout-button"><i class="fas fa-door-open "></i></a>
 </div>
diff --git a/src/main/resources/templates/user/update_alu.html b/src/main/resources/templates/user/update_alu.html
index 75fa477..0becdc8 100644
--- a/src/main/resources/templates/user/update_alu.html
+++ b/src/main/resources/templates/user/update_alu.html
@@ -100,14 +100,14 @@
         <div class ="form-group row">
             <label class="col-sm-3 col-form-label" for="nia">Nia</label>
             <div class = "col-sm-9">
-                <input type="text" th:field="*{nia}"   required minlength="8" maxlength="8" title="Entra un nia correcto" class="form-control" id="nia">
+                <input type="text" th:field="*{nia}" required pattern="^\d{8}$" title="Entra un nia correcto" class="form-control" id="nia">
             </div>
         </div>
 
         <div class="form-group row">
             <label class="col-sm-3 col-form-label" for="dni">DNI/NIE</label>
             <div class="col-sm-9">
-                <input type="text" th:field="*{dni}" required minlength="8" maxlength="8" class="form-control" id="dni" title="Introduce DNI/NIE">
+                <input type="text" th:field="*{dni}" required pattern="^[XYZ]?\d{7,8}[A-Za-z]$" title="Introduce DNI/NIE" class="form-control" id="dni">
             </div>
         </div>
 
