diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 4fc2444..2eb0dc3 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -6,13 +6,30 @@
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
-    <TextView
+    <androidx.constraintlayout.widget.Guideline
+        android:id="@+id/derecha"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        android:orientation="vertical"
+        app:layout_constraintGuide_percent="0.95" />
 
+    <androidx.constraintlayout.widget.Guideline
+        android:id="@+id/izquierda"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        app:layout_constraintGuide_percent="0.05" />
+
+    <androidx.constraintlayout.widget.Guideline
+        android:id="@+id/arriba"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        app:layout_constraintGuide_percent="0.025" />
+    <androidx.constraintlayout.widget.Guideline
+        android:id="@+id/abajo"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        app:layout_constraintGuide_percent="0.975" />
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file