diff --git a/app/app.iml b/app/app.iml
index f3046bd..17f3d39 100644
--- a/app/app.iml
+++ b/app/app.iml
@@ -37,22 +37,22 @@
       <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/test/debug" type="java-test-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/debug/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/assets" type="java-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/debug/assets" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/debug/java" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/main/res" type="java-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/assets" type="java-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/main/aidl" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/assets" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/main/jni" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/main/rs" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/androidTest/res" type="java-test-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/androidTest/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/assets" type="java-test-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/androidTest/aidl" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/assets" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/src/androidTest/java" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/src/androidTest/jni" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/src/androidTest/rs" isTestSource="true" />
@@ -79,8 +79,8 @@
     </content>
     <orderEntry type="jdk" jdkName="Android API 20 Platform" jdkType="Android SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" exported="" name="support-v4-20.0.0" level="project" />
     <orderEntry type="library" exported="" name="support-annotations-20.0.0" level="project" />
+    <orderEntry type="library" exported="" name="support-v4-20.0.0" level="project" />
   </component>
 </module>
 
diff --git a/app/src/main/res/layout/activity_compra.xml b/app/src/main/res/layout/activity_compra.xml
index 326b0b0..d190aff 100644
--- a/app/src/main/res/layout/activity_compra.xml
+++ b/app/src/main/res/layout/activity_compra.xml
@@ -42,7 +42,9 @@
                     android:layout_width="fill_parent"
                     android:layout_height="fill_parent"
                     android:text="COMPRAR"
-                    android:id="@+id/button" />
+                    android:id="@+id/button"
+                    style="@style/ButtonStyle"
+                    />
             </LinearLayout>
 
         </LinearLayout>
diff --git a/app/src/main/res/layout/activity_login.xml b/app/src/main/res/layout/activity_login.xml
index a765757..8f052d1 100644
--- a/app/src/main/res/layout/activity_login.xml
+++ b/app/src/main/res/layout/activity_login.xml
@@ -54,14 +54,18 @@
             android:layout_height="wrap_content"
             android:text="Entrar"
             android:id="@+id/entrar"
-            android:layout_gravity="center_horizontal" />
+            android:layout_gravity="center_horizontal"
+            style="@style/ButtonStyle"
+            />
 
         <Button
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="Registrarse"
             android:id="@+id/button2"
-            android:layout_gravity="center_horizontal" />
+            android:layout_gravity="center_horizontal"
+            style="@style/ButtonStyle"
+            />
 
     </LinearLayout>
 
diff --git a/app/src/main/res/layout/activity_product.xml b/app/src/main/res/layout/activity_product.xml
index 561a766..6f36d7d 100644
--- a/app/src/main/res/layout/activity_product.xml
+++ b/app/src/main/res/layout/activity_product.xml
@@ -18,77 +18,88 @@
         android:layout_height="fill_parent"
         android:id="@+id/scrollView" >
 
-        <LinearLayout
-            android:orientation="vertical"
-            android:layout_width="fill_parent"
-            android:layout_height="fill_parent">
+    </ScrollView>
 
-            <TextView
+    <LinearLayout
+        android:orientation="vertical"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        android:layout_gravity="center">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="?android:attr/textAppearanceLarge"
+            android:text="Large Text"
+            android:id="@+id/nombre"
+            android:layout_gravity="center" />
+
+        <ImageView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:id="@+id/imageView"
+            android:layout_gravity="center" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="?android:attr/textAppearanceMedium"
+            android:text="Medium Text"
+            android:id="@+id/desc"
+            android:layout_gravity="center" />
+
+        <GridLayout
+            android:layout_width="wrap_content"
+            android:layout_height="fill_parent"
+            android:layout_gravity="top|center"
+            android:columnCount="4"
+            android:rowCount="4"
+            android:layout_marginLeft="25dp"
+            android:layout_marginTop="100dp">
+
+            <Button
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="Opiniones"
+                android:id="@+id/button"
+                android:layout_row="1"
+                android:layout_column="1"
+                style="@style/ButtonStyle"
+                />
+
+            <Button
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:textAppearance="?android:attr/textAppearanceLarge"
-                android:text="Large Text"
-                android:id="@+id/nombre"
-                android:layout_gravity="center" />
-
-            <ImageView
+                android:text="Añadir al carro"
+                android:id="@+id/button2"
+                android:layout_gravity="right"
+                android:layout_row="2"
+                android:layout_column="1"
+                style="@style/ButtonStyle"
+                />
+
+            <Button
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:id="@+id/imageView"
-                android:layout_gravity="center" />
-
-            <TextView
+                android:text="Juega"
+                android:id="@+id/button3"
+                android:layout_row="1"
+                android:layout_column="2"
+                android:width="2dp"
+                style="@style/ButtonStyle"
+                />
+
+            <Button
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:textAppearance="?android:attr/textAppearanceMedium"
-                android:text="Medium Text"
-                android:id="@+id/desc"
-                android:layout_gravity="center" />
-
-            <GridLayout
-                android:layout_width="fill_parent"
-                android:layout_height="fill_parent"
-                android:layout_gravity="top|center"
-                android:columnCount="4"
-                android:rowCount="4"
-                android:layout_marginLeft="25dp"
-                android:layout_marginTop="100dp">
-
-                <Button
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:text="Opiniones"
-                    android:id="@+id/button"
-                    android:layout_row="1"
-                    android:layout_column="1" />
-
-                <Button
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:text="Añadir al carro"
-                    android:id="@+id/button2"
-                    android:layout_gravity="right"
-                    android:layout_row="2"
-                    android:layout_column="1" />
-
-                <Button
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:text="Juega"
-                    android:id="@+id/button3"
-                    android:layout_row="1"
-                    android:layout_column="2" />
-
-                <Button
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:text="Follow"
-                    android:id="@+id/button4"
-                    android:layout_row="2"
-                    android:layout_column="2" />
-            </GridLayout>
-        </LinearLayout>
-    </ScrollView>
+                android:text="Follow"
+                android:id="@+id/button4"
+                android:layout_row="2"
+                android:layout_column="2"
+                style="@style/ButtonStyle"
+                />
+        </GridLayout>
+    </LinearLayout>
 
 </FrameLayout>
 
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 60cc6f5..90d3d08 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -33,4 +33,8 @@
         <item name="android:dropDownListViewStyle">@style/DropDownListView.Example</item>
     </style>
 
+    <style name="ButtonStyle" parent="android:Theme.Light">
+        <item name="android:background">@color/red</item>
+    </style>
+
 </resources>