diff --git a/html/pagina0.html b/html/pagina0.html
new file mode 100644
index 00000000..368f53cf
--- /dev/null
+++ b/html/pagina0.html
@@ -0,0 +1,33 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
+<HTML>
+        <HEAD>
+                <META HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=UTF-8">
+                <TITLE>Mi primera página</TITLE>
+                <META NAME="GENERATOR" CONTENT="OpenOffice.org 1.0  (Win32)">
+                <META NAME="AUTHOR" CONTENT="">
+                <META NAME="CREATED" CONTENT="">
+                <META NAME="CHANGEDBY" CONTENT="">
+                <META NAME="CHANGED" CONTENT="">
+                <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
+        </HEAD>
+        <BODY LANG="es-ES" class="container text-center">
+                <H1>
+                        <IMG ID="imagen5" SRC="../imagenes/BD1.png" NAME="Imagen1" ALIGN=CENTER WIDTH=700 HEIGHT=50><BR CLEAR=LEFT><BR><BR>
+                </H1>
+                
+                <H1 ID="titulo5">Mi primera página HTML</H1>
+                <P>
+                        <BR><BR>
+                </P>
+               
+                <div class="row text-center">
+                        <div class="col-md-6">
+                                <span>&larr;</span><A HREF="pagina4.html">Mi cuarta página HTML</A>
+                        </div>
+                        <div class="col-md-6">
+                                <A ID="enlace5" HREF="pagina2.html">Mi segunda página HTML</A><span>&rarr;</span>
+                        </div>
+                </div>
+                <P></P>
+        </BODY>
+</HTML>
\ No newline at end of file
diff --git a/html/pagina1.html b/html/pagina1.html
index 9a868b19..758b5ec6 100644
--- a/html/pagina1.html
+++ b/html/pagina1.html
@@ -12,7 +12,7 @@
 	</HEAD>
 	<BODY LANG="es-ES" class="container text-center">
 		<H1>
-			<IMG ID="imagen1" SRC="../imagenes/BD1.gif" NAME="Imagen1" ALIGN=CENTER WIDTH=700 HEIGHT=50><BR CLEAR=LEFT><BR><BR>
+			<IMG ID="imagen1" SRC="../imagenes/BD1.png" NAME="Imagen1" ALIGN=CENTER WIDTH=700 HEIGHT=50><BR CLEAR=LEFT><BR><BR>
 		</H1>
 		<H1 ID="titulo1">Mi primera página HTML</H1>
 		<P>
@@ -23,7 +23,7 @@ <H1 ID="titulo1">Mi primera página HTML</H1>
 				<span>&larr;</span><A HREF="pagina5.html">Mi quinta página HTML</A>
 			</div>
 			<div class="col-md-6">
-				<A ID="enlace1" HREF="pagina1.html">Mi primera página HTML</A><span>&rarr;</span>
+				<A ID="enlace1" HREF="pagina2.html">Mi segunda página HTML</A><span>&rarr;</span>
 			</div>
 		</div>
 	</BODY>
diff --git a/html/pagina2.html b/html/pagina2.html
index 911dcbd6..2295eb97 100644
--- a/html/pagina2.html
+++ b/html/pagina2.html
@@ -1,30 +1,28 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
-<HTML>
-<HEAD>
-	<META HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=UTF-8">
-		<TITLE>Mi primera página</TITLE>
-		<META NAME="GENERATOR" CONTENT="OpenOffice.org 1.0  (Win32)">
-		<META NAME="AUTHOR" CONTENT="Gloria Cort&eacute;s">
-		<META NAME="CREATED" CONTENT="20020903;6090096">
-		<META NAME="CHANGEDBY" CONTENT="Gloria Cort&eacute;s">
-		<META NAME="CHANGED" CONTENT="20020903;6133657">
+<!DOCTYPE html><html><head>
+	<meta http-equiv="CONTENT-TYPE" content="text/html; charset=UTF-8">
+		<title>Mi primera página</title>
+		<meta name="GENERATOR" content="OpenOffice.org 1.0  (Win32)">
+		<meta name="AUTHOR" content="Gloria Cortés">
+		<meta name="CREATED" content="20020903;6090096">
+		<meta name="CHANGEDBY" content="Gloria Cortés">
+		<meta name="CHANGED" content="20020903;6133657">
 		<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
-	</HEAD>
-	<BODY LANG="es-ES" class="container text-center">
-		<H1>
-			<IMG ID="imagen2" SRC="../imagenes/BD1.gif" NAME="Imagen1" ALIGN=CENTER WIDTH=700 HEIGHT=50><BR CLEAR=LEFT><BR><BR>
-		</H1>
-		<H1 ID="titulo2">Mi primera página HTML</H1>
-		<P>
-			<BR><BR>
-		</P>
+	</head>
+	<body lang="es-ES" class="container text-center">
+		<h1>
+			<img id="imagen2" src="../imagenes/BD2.png" name="Imagen1" align="CENTER" width="700" height="50"><br clear="LEFT"><br><br>
+		</h1>
+		<h1 id="titulo2">Mi segunda página HTML</h1>
+		<p>
+			<br><br>
+		</p>
 		<div class="row text-center">
 			<div class="col-md-6">
-				<span>&larr;</span><A HREF="pagina1.html">Mi primera página HTML</A>
+				<span>←</span><a href="pagina1.html">Mi primera página HTML</a>
 			</div>
 			<div class="col-md-6">
-				<A ID="enlace2" HREF="pagina2.html">Mi segunda página HTML</A><span>&rarr;</span>
+				<a id="enlace2" href="pagina3.html">Mi tercera página HTML</a><span>→</span>
 			</div>
 		</div>
-	</BODY>
-</HTML>
\ No newline at end of file
+	
+</body></html>
\ No newline at end of file
diff --git a/html/pagina3.html b/html/pagina3.html
index b93a89cb..3d2af43a 100644
--- a/html/pagina3.html
+++ b/html/pagina3.html
@@ -1,30 +1,28 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
-<HTML>
-	<HEAD>
-		<META HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=UTF-8">
-			<TITLE>Mi primera página</TITLE>
-			<META NAME="GENERATOR" CONTENT="OpenOffice.org 1.0  (Win32)">
-			<META NAME="AUTHOR" CONTENT="Gloria Cort&eacute;s">
-			<META NAME="CREATED" CONTENT="20020903;6090096">
-			<META NAME="CHANGEDBY" CONTENT="Gloria Cort&eacute;s">
-			<META NAME="CHANGED" CONTENT="20020903;6133657">
+<!DOCTYPE html><html><head>
+		<meta http-equiv="CONTENT-TYPE" content="text/html; charset=UTF-8">
+			<title>Mi primera página</title>
+			<meta name="GENERATOR" content="OpenOffice.org 1.0  (Win32)">
+			<meta name="AUTHOR" content="Gloria Cortés">
+			<meta name="CREATED" content="20020903;6090096">
+			<meta name="CHANGEDBY" content="Gloria Cortés">
+			<meta name="CHANGED" content="20020903;6133657">
 			<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
-		</HEAD>
-	<BODY LANG="es-ES" class="container text-center">
-		<H1>
-			<IMG ID="imagen3" SRC="../imagenes/BD1.gif" NAME="Imagen1" ALIGN=CENTER WIDTH=700 HEIGHT=50><BR CLEAR=LEFT><BR><BR>
-		</H1>
-		<H1 ID="titulo3">Mi primera página HTML</H1>
-		<P>
-			<BR><BR>
-		</P>
+		</head>
+	<body lang="es-ES" class="container text-center">
+		<h1>
+			<img id="imagen3" src="../imagenes/BD3.png" name="Imagen1" align="CENTER" width="700" height="50"><br clear="LEFT"><br><br>
+		</h1>
+		<h1 id="titulo3">Mi tercera página HTML</h1>
+		<p>
+			<br><br>
+		</p>
 		<div class="row text-center">
 			<div class="col-md-6">
-				<span>&larr;</span><A HREF="pagina2.html">Mi segunda página HTML</A>
+				<span>←</span><a href="pagina2.html">Mi segunda página HTML</a>
 			</div>
 			<div class="col-md-6">
-				<A ID="enlace3" HREF="pagina2.html">Mi segunda página HTML</A><span>&rarr;</span>
+				<a id="enlace3" href="pagina4.html">Mi cuarta página HTML</a><span>→</span>
 			</div>
 		</div>
-	</BODY>
-</HTML>
\ No newline at end of file
+	
+</body></html>
\ No newline at end of file
diff --git a/html/pagina4.html b/html/pagina4.html
index 73dc1484..37d084cf 100644
--- a/html/pagina4.html
+++ b/html/pagina4.html
@@ -1,30 +1,28 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
-<HTML>
-	<HEAD>
-		<META HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=UTF-8">
-		<TITLE>Mi primera página</TITLE>
-		<META NAME="GENERATOR" CONTENT="OpenOffice.org 1.0  (Win32)">
-		<META NAME="AUTHOR" CONTENT="Gloria Cort&eacute;s">
-		<META NAME="CREATED" CONTENT="20020903;6090096">
-		<META NAME="CHANGEDBY" CONTENT="Gloria Cort&eacute;s">
-		<META NAME="CHANGED" CONTENT="20020903;6133657">
+<!DOCTYPE html><html><head>
+		<meta http-equiv="CONTENT-TYPE" content="text/html; charset=UTF-8">
+		<title>Mi primera página</title>
+		<meta name="GENERATOR" content="OpenOffice.org 1.0  (Win32)">
+		<meta name="AUTHOR" content="Gloria Cortés">
+		<meta name="CREATED" content="20020903;6090096">
+		<meta name="CHANGEDBY" content="Gloria Cortés">
+		<meta name="CHANGED" content="20020903;6133657">
 		<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
-	</HEAD>
-	<BODY LANG="es-ES" class="container text-center">
-		<H1>
-			<IMG ID="imagen4" SRC="../imagenes/BD1.gif" NAME="Imagen1" ALIGN=CENTER WIDTH=700 HEIGHT=50><BR CLEAR=LEFT><BR><BR>
-		</H1>
-		<H1 ID="titulo4">Mi primera página HTML</H1>
-		<P>
-			<BR><BR>
-		</P>
+	</head>
+	<body lang="es-ES" class="container text-center">
+		<h1>
+			<img id="imagen4" src="../imagenes/BD4.png" name="Imagen1" align="CENTER" width="700" height="50"><br clear="LEFT"><br><br>
+		</h1>
+		<h1 id="titulo4">Mi cuarta página HTML</h1>
+		<p>
+			<br><br>
+		</p>
 		<div class="row text-center">
 			<div class="col-md-6">
-				<span>&larr;</span><A HREF="pagina3.html">Mi tercera página HTML</A>
+				<span>←</span><a href="pagina3.html">Mi tercera página HTML</a>
 			</div>
 			<div class="col-md-6">
-				<A ID="enlace4" HREF="pagina2.html">Mi segunda página HTML</A><span>&rarr;</span>
+				<a id="enlace4" href="pagina5.html">Mi quinta página HTML</a><span>→</span>
 			</div>
 		</div>
-	</BODY>
-</HTML>
\ No newline at end of file
+	
+</body></html>
\ No newline at end of file
diff --git a/html/pagina5.html b/html/pagina5.html
index e57c377f..2ec0704c 100644
--- a/html/pagina5.html
+++ b/html/pagina5.html
@@ -1,31 +1,29 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
-<HTML>
-	<HEAD>
-		<META HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=UTF-8">
-		<TITLE>Mi primera página</TITLE>
-		<META NAME="GENERATOR" CONTENT="OpenOffice.org 1.0  (Win32)">
-		<META NAME="AUTHOR" CONTENT="Gloria Cort&eacute;s">
-		<META NAME="CREATED" CONTENT="20020903;6090096">
-		<META NAME="CHANGEDBY" CONTENT="Gloria Cort&eacute;s">
-		<META NAME="CHANGED" CONTENT="20020903;6133657">
+<!DOCTYPE html><html><head>
+		<meta http-equiv="CONTENT-TYPE" content="text/html; charset=UTF-8">
+		<title>Mi primera página</title>
+		<meta name="GENERATOR" content="OpenOffice.org 1.0  (Win32)">
+		<meta name="AUTHOR" content="Gloria Cortés">
+		<meta name="CREATED" content="20020903;6090096">
+		<meta name="CHANGEDBY" content="Gloria Cortés">
+		<meta name="CHANGED" content="20020903;6133657">
 		<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
-	</HEAD>
-	<BODY LANG="es-ES" class="container text-center">
-		<H1>
-			<IMG ID="imagen5" SRC="../imagenes/BD1.gif" NAME="Imagen1" ALIGN=CENTER WIDTH=700 HEIGHT=50><BR CLEAR=LEFT><BR><BR>
-		</H1>
-		<H1 ID="titulo5">Mi primera página HTML</H1>
-		<P>
-			<BR><BR>
-		</P>
+	</head>
+	<body lang="es-ES" class="container text-center">
+		<h1>
+			<img id="imagen5" src="../imagenes/BD5.png" name="Imagen1" align="CENTER" width="700" height="50"><br clear="LEFT"><br><br>
+		</h1>
+		<h1 id="titulo5">Mi quinta página HTML</h1>
+		<p>
+			<br><br>
+		</p>
 		<div class="row text-center">
 			<div class="col-md-6">
-				<span>&larr;</span><A HREF="pagina4.html">Mi cuarta página HTML</A>
+				<span>←</span><a href="pagina4.html">Mi cuarta página HTML</a>
 			</div>
 			<div class="col-md-6">
-				<A ID="enlace5" HREF="pagina2.html">Mi segunda página HTML</A><span>&rarr;</span>
+				<a id="enlace5" href="pagina1.html">Mi primera página HTML</a><span>→</span>
 			</div>
 		</div>
-		<P></P>
-	</BODY>
-</HTML>
\ No newline at end of file
+		<p></p>
+	
+</body></html>
\ No newline at end of file
diff --git a/imagenes/BD1.gif b/imagenes/BD1.png
similarity index 100%
rename from imagenes/BD1.gif
rename to imagenes/BD1.png
diff --git a/imagenes/BD2.gif b/imagenes/BD2.png
similarity index 100%
rename from imagenes/BD2.gif
rename to imagenes/BD2.png
diff --git a/imagenes/BD3.gif b/imagenes/BD3.png
similarity index 100%
rename from imagenes/BD3.gif
rename to imagenes/BD3.png
diff --git a/imagenes/BD4.gif b/imagenes/BD4.png
similarity index 100%
rename from imagenes/BD4.gif
rename to imagenes/BD4.png
diff --git a/imagenes/BD5.gif b/imagenes/BD5.png
similarity index 100%
rename from imagenes/BD5.gif
rename to imagenes/BD5.png
