diff --git a/cl-theme/templates/article.html b/cl-theme/templates/article.html
index fff03ef..791bd54 100644
--- a/cl-theme/templates/article.html
+++ b/cl-theme/templates/article.html
@@ -34,14 +34,14 @@
             {% endif %}
         {% endif %}
         <!-- Meta Article -->
-        <meta name="author" content="{{ article.author.name }}" />
-        <meta name="description" content="{{ seo_description }}" />
-        <meta name="keywords" content="{{ article.tags|join(', ') }}">
-        <meta property="article:author" content="{{ article.author }}" />
-        <meta property="article:section" content="{{ article.category }}" />
+        <meta name="author" content="{{ article.author.name }}"/>
+        <meta name="description" content="{{ seo_description }}"/>
+        <meta name="keywords" content="{{ article.tags|join(', ') }}"/>
+        <meta property="article:author" content="{{ article.author }}"/>
+        <meta property="article:section" content="{{ article.category }}"/>
         <meta property="article:published_time" content="{{ article.date.strftime("%Y-%m-%d-T%H-%M-%S") }}"/>
         {% if article.modified %}
-            <meta property="article:modified_time" content="{{ article.modified.isoformat() }}">
+            <meta property="article:modified_time" content="{{ article.modified.isoformat() }}"/>
         {% endif %}
 
         <!-- OpenGraph -->
@@ -54,11 +54,11 @@
         <meta property="og:image" content="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/../wp-content/uploads/article/poster/{{ article.image }}"/>
 
         <!-- Twitter -->
-        <meta name="twitter:card" content="summary">
-        <meta name="twitter:title" content="{{ article.title }} - {{ SITENAME }}">
-        <meta name="twitter:description" content="{{ seo_description }}">
-        <meta name="twitter:url" content="{{ SITEURL }}/{{ article.url }}">
-        <meta name="twitter:image" content="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/../wp-content/uploads/article/poster/{{ article.image }}">
+        <meta name="twitter:card" content="summary"/>
+        <meta name="twitter:title" content="{{ article.title }} - {{ SITENAME }}"/>
+        <meta name="twitter:description" content="{{ seo_description }}"/>
+        <meta name="twitter:url" content="{{ SITEURL }}/{{ article.url }}"/>
+        <meta name="twitter:image" content="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/../wp-content/uploads/article/poster/{{ article.image }}"/>
     {% endblock %}
 {% endblock %}
 
diff --git a/cl-theme/templates/author.html b/cl-theme/templates/author.html
index 1bfcfe2..8f4627a 100644
--- a/cl-theme/templates/author.html
+++ b/cl-theme/templates/author.html
@@ -5,9 +5,9 @@
 {% endblock %}
 {% block seo %}
     <!-- Meta Author -->
-    <meta name="author" content="{{ author }}">
-    <meta name="description" content="{{ _('Artículos escritos por %(author)s en %(sitename)s', author=author, sitename=SITENAME) }}">
-    <meta name="keywords" content="{% trans %}articulista,artículos,author,autor {{ author }},escritor,{{ author }}{% endtrans %}">
+    <meta name="author" content="{{ author }}"/>
+    <meta name="description" content="{{ _('Artículos escritos por %(author)s en %(sitename)s', author=author, sitename=SITENAME) }}"/>
+    <meta name="keywords" content="{% trans %}articulista,artículos,author,autor {{ author }},escritor,{{ author }}{% endtrans %}"/>
     <style>
      .card-content-header {
          margin-bottom: 2rem;
diff --git a/cl-theme/templates/authors.html b/cl-theme/templates/authors.html
index c65830d..ab8f658 100644
--- a/cl-theme/templates/authors.html
+++ b/cl-theme/templates/authors.html
@@ -4,19 +4,19 @@
     {% block title %}<title>{{ _('Créditos de %(sitename)s', sitename=SITENAME) }}</title>{% endblock %}
     {{ super() }}
     {% block seo %}
-        <meta name="description" content="{{ _('Lista de autores de %(sitename)s', sitename=SITENAME) }}">
-        <meta name="keywords" content="{{ _('articulistas, autores, colaboradores, escritores, lista de autores') }}">
+        <meta name="description" content="{{ _('Lista de autores de %(sitename)s', sitename=SITENAME) }}"/>
+        <meta name="keywords" content="{{ _('articulistas, autores, colaboradores, escritores, lista de autores') }}"/>
 
         <!-- OpenGraph -->
         <meta property="og:type" content="article"/>
         <meta property="og:title" content="{{ _('Lista de autores de %(sitename)s', sitename=SITENAME) }}"/>
         <meta property="og:description" content="{{ SITESUBTITLE }}"/>
-        <meta property="og:site_name" content="{{ SITENAME }}" />
+        <meta property="og:site_name" content="{{ SITENAME }}"/>
 
         <!-- Twitter -->
-        <meta name="twitter:card" content="summary">
-        <meta name="twitter:title" content="{{ _('Lista de autores de %(sitename)s', sitename=SITENAME) }}">
-        <meta name="twitter:description" content="{{ SITESUBTITLE }}">
+        <meta name="twitter:card" content="summary"/>
+        <meta name="twitter:title" content="{{ _('Lista de autores de %(sitename)s', sitename=SITENAME) }}"/>
+        <meta name="twitter:description" content="{{ SITESUBTITLE }}"/>
     {% endblock %}
 {% endblock %}
 
diff --git a/cl-theme/templates/base.html b/cl-theme/templates/base.html
index 5221c11..d49ad8a 100644
--- a/cl-theme/templates/base.html
+++ b/cl-theme/templates/base.html
@@ -12,46 +12,46 @@
 
             <!-- Feed -->
             {% if FEED_ALL_ATOM %}
-                <link href="{{ FEED_DOMAIN }}/{{ FEED_ALL_ATOM }}" type="application/atom+xml" rel="alternate" title="{{ _('Fuente completa de entradas Atom de %(sitename)s', sitename=SITENAME) }}" />
+                <link href="{{ FEED_DOMAIN }}/{{ FEED_ALL_ATOM }}" type="application/atom+xml" rel="alternate" title="{{ _('Fuente completa de entradas Atom de %(sitename)s', sitename=SITENAME) }}"/>
             {% endif %}
             {% if FEED_ALL_RSS %}
-                <link href="{{ FEED_DOMAIN }}/{{ FEED_ALL_RSS }}" type="application/rss+xml" rel="alternate" title="{{ _('Fuente completa de entradas RSS de %(sitename)s', sitename=SITENAME) }}" />
+                <link href="{{ FEED_DOMAIN }}/{{ FEED_ALL_RSS }}" type="application/rss+xml" rel="alternate" title="{{ _('Fuente completa de entradas RSS de %(sitename)s', sitename=SITENAME) }}"/>
             {% endif %}
             {% if FEED_ATOM %}
-                <link href="{{ FEED_DOMAIN }}/{{ FEED_ATOM }}" type="application/atom+xml" rel="alternate" title="{{ _('Fuente Atom de %(sitename)s', sitename=SITENAME) }}" />
+                <link href="{{ FEED_DOMAIN }}/{{ FEED_ATOM }}" type="application/atom+xml" rel="alternate" title="{{ _('Fuente Atom de %(sitename)s', sitename=SITENAME) }}"/>
             {% endif %}
             {% if FEED_RSS %}
-                <link href="{{ FEED_DOMAIN }}/{{ FEED_RSS }}" type="application/rss+xml" rel="alternate" title="{{ _('Fuente RSS de %(sitename)s', sitename=SITENAME) }}" />
+                <link href="{{ FEED_DOMAIN }}/{{ FEED_RSS }}" type="application/rss+xml" rel="alternate" title="{{ _('Fuente RSS de %(sitename)s', sitename=SITENAME) }}"/>
             {% endif %}
             {% if CATEGORY_FEED_ATOM and category %}
-                <link href="{{ FEED_DOMAIN }}/{{ CATEGORY_FEED_ATOM|format(slug=category.slug) }}" type="application/atom+xml" rel="alternate" title="{{ _('Fuente de categorías Atom de %(sitename)s', sitename=SITENAME) }}" />
+                <link href="{{ FEED_DOMAIN }}/{{ CATEGORY_FEED_ATOM|format(slug=category.slug) }}" type="application/atom+xml" rel="alternate" title="{{ _('Fuente de categorías Atom de %(sitename)s', sitename=SITENAME) }}"/>
             {% endif %}
             {% if CATEGORY_FEED_RSS and category %}
-                <link href="{{ FEED_DOMAIN }}/{{ CATEGORY_FEED_RSS|format(slug=category.slug) }}" type="application/rss+xml" rel="alternate" title="{{ _('Fuente RSS de categorías de %(sitename)s', sitename=SITENAME) }}" />
+                <link href="{{ FEED_DOMAIN }}/{{ CATEGORY_FEED_RSS|format(slug=category.slug) }}" type="application/rss+xml" rel="alternate" title="{{ _('Fuente RSS de categorías de %(sitename)s', sitename=SITENAME) }}"/>
             {% endif %}
             {% if TAG_FEED_ATOM and tag %}
-                <link href="{{ FEED_DOMAIN }}/{{ TAG_FEED_ATOM|format(slug=tag.slug) }}" type="application/atom+xml" rel="alternate" title="{{ _('Fuente Atom de etiquetas de %(sitename)s', sitename=SITENAME) }}" />
+                <link href="{{ FEED_DOMAIN }}/{{ TAG_FEED_ATOM|format(slug=tag.slug) }}" type="application/atom+xml" rel="alternate" title="{{ _('Fuente Atom de etiquetas de %(sitename)s', sitename=SITENAME) }}"/>
             {% endif %}
             {% if TAG_FEED_RSS and tag %}
-                <link href="{{ FEED_DOMAIN }}/{{ TAG_FEED_RSS|format(slug=tag.slug) }}" type="application/rss+xml" rel="alternate" title="{{ _('Fuente RSS de etiquetas de %(sitename)s', sitename=SITENAME) }}" />
+                <link href="{{ FEED_DOMAIN }}/{{ TAG_FEED_RSS|format(slug=tag.slug) }}" type="application/rss+xml" rel="alternate" title="{{ _('Fuente RSS de etiquetas de %(sitename)s', sitename=SITENAME) }}"/>
             {% endif %}
             {% if TRANSLATION_FEED_ATOM %}
                 {% for LANG in LANGS %}
                     {% set translation_feed = 'feeds/all-%s.atom.xml' % (LANG) %}
-                    <link href="{{ FEED_DOMAIN }}/{{ translation_feed }}" type="application/atom+xml" rel="alternate" title="{{ _('Fuente Atom de idioma %(lang)s de %(sitename)s', lang=LANG, sitename=SITENAME) }}" />
+                    <link href="{{ FEED_DOMAIN }}/{{ translation_feed }}" type="application/atom+xml" rel="alternate" title="{{ _('Fuente Atom de idioma %(lang)s de %(sitename)s', lang=LANG, sitename=SITENAME) }}"/>
                 {% endfor %}
             {% endif %}
 
             <!-- stylesheets -->
-            <link rel="stylesheet" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/css/bulma.css?v=0.7.4">
-            <link rel="stylesheet" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/css/hover.css">
-            <link rel="stylesheet" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/css/style.css?v=1.0.3">
+            <link rel="stylesheet" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/css/bulma.css?v=0.7.4"/>
+            <link rel="stylesheet" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/css/hover.css"/>
+            <link rel="stylesheet" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/css/style.css?v=1.0.3"/>
             <!-- favicon -->
-            <link rel="icon" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-16x16.png" sizes="16x16">
-            <link rel="icon" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-32x32.png" sizes="32x32">
-            <link rel="icon" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-96x96.png" sizes="96x96">
-            <link rel="icon" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-192x192.png" sizes="192x192">
-            <link rel="apple-touch-icon-precomposed" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-180x180.png">
+            <link rel="icon" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-16x16.png" sizes="16x16"/>
+            <link rel="icon" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-32x32.png" sizes="32x32"/>
+            <link rel="icon" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-96x96.png" sizes="96x96"/>
+            <link rel="icon" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-192x192.png" sizes="192x192"/>
+            <link rel="apple-touch-icon-precomposed" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-180x180.png"/>
         {% endblock head %}
     </head>
     <body>
diff --git a/cl-theme/templates/comments.html b/cl-theme/templates/comments.html
index 3bca15e..badae0c 100644
--- a/cl-theme/templates/comments.html
+++ b/cl-theme/templates/comments.html
@@ -61,11 +61,11 @@
 
             <!-- form begin -->
             <form id="commentform" method="POST" action="{{ SITEURL }}/vendor/form-comments/commentsubmit.php">
-                <input type="hidden" name="post_id" value="{{ article.url }}">
+                <input type="hidden" name="post_id" value="{{ article.url }}"/>
                 {% if RELATIVE_URLS == False %}
-                    <input type="hidden" name="return_url" value="{{ SITEURL }}/{{ article.url }}" />
+                    <input type="hidden" name="return_url" value="{{ SITEURL }}/{{ article.url }}"/>
                 {% else %}
-                    <input type="hidden" name="return_url" value="../../{{ article.url }}" />
+                    <input type="hidden" name="return_url" value="../../{{ article.url }}"/>
                 {% endif %}
                 <div class="field is-horizontal">
                     <div class="field-label is-normal">
@@ -78,7 +78,7 @@
                                        class="input"
                                        type="text"
                                        name="name"
-                                       placeholder="{{ _('Su nombre o nick') }}">
+                                       placeholder="{{ _('Su nombre o nick') }}"/>
                             </div>
                         </div>
                     </div>
@@ -95,7 +95,7 @@
                                        class="input"
                                        type="email"
                                        name="email"
-                                       placeholder="{{ _('E-mail (requerido, no será publicado)') }}">
+                                       placeholder="{{ _('E-mail (requerido, no será publicado)') }}"/>
                             </div>
                         </div>
                     </div>
@@ -112,7 +112,7 @@
                                        class="input"
                                        type="url"
                                        name="link"
-                                       placeholder="{{ _('Su sitio web (opcional)') }}">
+                                       placeholder="{{ _('Su sitio web (opcional)') }}"/>
                             </div>
                         </div>
                     </div>
@@ -148,7 +148,7 @@
                     <div class="field-body">
                         <div class="field">
                             <p class="control">
-                                <input class="button is-button-grey" name="submit" type="submit" value="{{ _('Enviar comentario') }}">
+                                <input class="button is-button-grey" name="submit" type="submit" value="{{ _('Enviar comentario') }}"/>
                                 <!-- Política de Uso -->
                                 {% if DEFAULT_LANG == 'en' %}
                                     <a href="{{ SITEURL}}/pages/politica-de-uso-es.html">{{ _('Política de uso') }}</a>
diff --git a/cl-theme/templates/index.html b/cl-theme/templates/index.html
index a268e20..21ea3a0 100644
--- a/cl-theme/templates/index.html
+++ b/cl-theme/templates/index.html
@@ -8,27 +8,27 @@
     {% if lang_siteurls and articles_page.number == 1 %}
         <!-- Languages -->
         {% for lang, url in lang_siteurls.items() %}
-            <link rel="alternate" hreflang="{{ lang }}" href="{{ url }}/">
+            <link rel="alternate" hreflang="{{ lang }}" href="{{ url }}/"/>
         {% endfor %}
     {% endif %}
     {% block seo %}
         {% set SITE_DESCRIPTION = _('Tutoriales para GNU con Linux-libre enfocado a la cultura libre, programas libres y respetando la privacidad.') %}
         <!-- Meta Index -->
-        <meta name="author" content="{{ AUTHOR }}" />
-        <meta name="description" content="{{ SITE_DESCRIPTION }}">
+        <meta name="author" content="{{ AUTHOR }}"/>
+        <meta name="description" content="{{ SITE_DESCRIPTION }}"/>
 
         <!-- OpenGraph -->
-        <meta property="og:title" content="{{ SITENAME }}" />
-        <meta property="og:description" content="{{ SITE_DESCRIPTION }}" />
-        <meta property="og:url" content="{{ SITEURL }}" />
+        <meta property="og:title" content="{{ SITENAME }}"/>
+        <meta property="og:description" content="{{ SITE_DESCRIPTION }}"/>
+        <meta property="og:url" content="{{ SITEURL }}"/>
         <meta property="og:image" content="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-96x96.png"/>
         <meta property="og:type" content="blog"/>
 
         <!-- Twitter -->
-        <meta name="twitter:card" content="summary_large_image">
-        <meta name="twitter:title" content="{{ SITENAME }}">
-        <meta name="twitter:description" content="{{ SITE_DESCRIPTION }}">
-        <meta name="twitter:image" content="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-96x96.png">
+        <meta name="twitter:card" content="summary_large_image"/>
+        <meta name="twitter:title" content="{{ SITENAME }}"/>
+        <meta name="twitter:description" content="{{ SITE_DESCRIPTION }}"/>
+        <meta name="twitter:image" content="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/images/favicon/cl-favicon-96x96.png"/>
     {% endblock %}
 {% endblock %}
 
diff --git a/cl-theme/templates/page.html b/cl-theme/templates/page.html
index f1da390..31e8bf0 100644
--- a/cl-theme/templates/page.html
+++ b/cl-theme/templates/page.html
@@ -25,21 +25,21 @@
     {% endif %}
     {% block seo %}
         <!-- Meta Page -->
-        <meta name="description" content="{{ SITENAME }} &ndash; {{ SITESUBTITLE }}">
-        <meta name="author" content="{{ page.author }}">
+        <meta name="description" content="{{ SITENAME }} &ndash; {{ SITESUBTITLE }}"/>
+        <meta name="author" content="{{ page.author }}"/>
 
         <!-- OpenGraph -->
         <meta property="og:type" content="article"/>
         <meta property="og:title" content="{{ page.title }}"/>
         <meta property="og:description" content="{{ SITESUBTITLE }}"/>
-        <meta property="og:site_name" content="{{ SITENAME }}" />
+        <meta property="og:site_name" content="{{ SITENAME }}"/>
         <meta property="og:url" content="{{ SITEURL }}/{{ page.url }}"/>
 
         <!-- Twitter -->
-        <meta name="twitter:card" content="summary">
-        <meta name="twitter:title" content="{{ page.title }}">
-        <meta name="twitter:description" content="{{ SITESUBTITLE }}">
-        <meta name="twitter:url" content="{{ SITEURL }}/{{ page.url }}">
+        <meta name="twitter:card" content="summary"/>
+        <meta name="twitter:title" content="{{ page.title }}"/>
+        <meta name="twitter:description" content="{{ SITESUBTITLE }}"/>
+        <meta name="twitter:url" content="{{ SITEURL }}/{{ page.url }}"/>
     {% endblock %}
 {% endblock %}
 
diff --git a/cl-theme/templates/translations.html b/cl-theme/templates/translations.html
index 508926d..7116942 100644
--- a/cl-theme/templates/translations.html
+++ b/cl-theme/templates/translations.html
@@ -10,7 +10,7 @@
 {% macro entry_hreflang(entry) %}
 {% if entry.translations %}
   {% for translation in entry.translations %}
-    <link rel="alternate" hreflang="{{ translation.lang }}" href="{{ SITEURL }}/{{ translation.url }}">
+    <link rel="alternate" hreflang="{{ translation.lang }}" href="{{ SITEURL }}/{{ translation.url }}"/>
   {% endfor %}
 {% endif %}
 {% endmacro %}