31 files changed, 44 insertions, 65 deletions
diff --git a/files/es/web/api/windoworworkerglobalscope/atob/index.html b/files/es/web/api/atob/index.html
index 446f7e2df9..71044fc0ab 100644
--- a/files/es/web/api/windoworworkerglobalscope/atob/index.html
+++ b/files/es/web/api/atob/index.html
@@ -1,8 +1,8 @@
 ---
 title: WindowBase64.atob()
-slug: Web/API/WindowOrWorkerGlobalScope/atob
+slug: Web/API/atob
 translation_of: Web/API/WindowOrWorkerGlobalScope/atob
-original_slug: Web/API/WindowBase64/atob
+original_slug: Web/API/WindowOrWorkerGlobalScope/atob
 ---
 <p>{{APIRef}}</p>
 
diff --git a/files/es/web/api/windoworworkerglobalscope/caches/index.html b/files/es/web/api/caches/index.html
index c8d3a71b97..db56d9611d 100644
--- a/files/es/web/api/windoworworkerglobalscope/caches/index.html
+++ b/files/es/web/api/caches/index.html
@@ -1,7 +1,8 @@
 ---
 title: WindowOrWorkerGlobalScope.caches
-slug: Web/API/WindowOrWorkerGlobalScope/caches
+slug: Web/API/caches
 translation_of: Web/API/WindowOrWorkerGlobalScope/caches
+original_slug: Web/API/WindowOrWorkerGlobalScope/caches
 ---
 <p>{{APIRef()}}{{SeeCompatTable}}</p>
 
diff --git a/files/es/web/api/windoworworkerglobalscope/clearinterval/index.html b/files/es/web/api/clearinterval/index.html
index c984baf637..df9ac60205 100644
--- a/files/es/web/api/windoworworkerglobalscope/clearinterval/index.html
+++ b/files/es/web/api/clearinterval/index.html
@@ -1,8 +1,8 @@
 ---
 title: WindowTimers.clearInterval()
-slug: Web/API/WindowOrWorkerGlobalScope/clearInterval
+slug: Web/API/clearInterval
 translation_of: Web/API/WindowOrWorkerGlobalScope/clearInterval
-original_slug: Web/API/WindowTimers/clearInterval
+original_slug: Web/API/WindowOrWorkerGlobalScope/clearInterval
 ---
 <div>
 <div>{{APIRef("HTML DOM")}}</div>
diff --git a/files/es/web/api/windoworworkerglobalscope/cleartimeout/index.html b/files/es/web/api/cleartimeout/index.html
index e40c77c5b6..d86391e675 100644
--- a/files/es/web/api/windoworworkerglobalscope/cleartimeout/index.html
+++ b/files/es/web/api/cleartimeout/index.html
@@ -1,8 +1,8 @@
 ---
 title: window.clearTimeout
-slug: Web/API/WindowOrWorkerGlobalScope/clearTimeout
+slug: Web/API/clearTimeout
 translation_of: Web/API/WindowOrWorkerGlobalScope/clearTimeout
-original_slug: Web/API/WindowTimers/clearTimeout
+original_slug: Web/API/WindowOrWorkerGlobalScope/clearTimeout
 ---
 <div>{{ApiRef}}</div>
 
diff --git a/files/es/web/api/windoworworkerglobalscope/createimagebitmap/index.html b/files/es/web/api/createimagebitmap/index.html
index e24e4b11f4..4f6c6fabe4 100644
--- a/files/es/web/api/windoworworkerglobalscope/createimagebitmap/index.html
+++ b/files/es/web/api/createimagebitmap/index.html
@@ -1,6 +1,6 @@
 ---
 title: self.createImageBitmap()
-slug: Web/API/WindowOrWorkerGlobalScope/createImageBitmap
+slug: Web/API/createImageBitmap
 tags:
   - API
   - Canvas
@@ -10,6 +10,7 @@ tags:
   - createImageBitmap
   - metodo
 translation_of: Web/API/WindowOrWorkerGlobalScope/createImageBitmap
+original_slug: Web/API/WindowOrWorkerGlobalScope/createImageBitmap
 ---
 <div>{{APIRef("Canvas API")}}</div>
 
diff --git a/files/es/web/api/windoworworkerglobalscope/fetch/index.html b/files/es/web/api/fetch/index.html
index 9540fe5d05..0b2f38916a 100644
--- a/files/es/web/api/windoworworkerglobalscope/fetch/index.html
+++ b/files/es/web/api/fetch/index.html
@@ -1,6 +1,6 @@
 ---
 title: WindowOrWorkerGlobalScope.fetch()
-slug: Web/API/WindowOrWorkerGlobalScope/fetch
+slug: Web/API/fetch
 tags:
   - API
   - Experimental
@@ -12,6 +12,7 @@ tags:
   - metodo
   - solicitud
 translation_of: Web/API/WindowOrWorkerGlobalScope/fetch
+original_slug: Web/API/WindowOrWorkerGlobalScope/fetch
 ---
 <div>{{APIRef("Fetch API")}}</div>
 
diff --git a/files/es/web/api/windoworworkerglobalscope/indexeddb/index.html b/files/es/web/api/indexeddb/index.html
index e6ef3fe5cd..6fa82a2310 100644
--- a/files/es/web/api/windoworworkerglobalscope/indexeddb/index.html
+++ b/files/es/web/api/indexeddb/index.html
@@ -1,7 +1,8 @@
 ---
 title: WindowOrWorkerGlobalScope.indexedDB
-slug: Web/API/WindowOrWorkerGlobalScope/indexedDB
+slug: Web/API/indexedDB
 translation_of: Web/API/WindowOrWorkerGlobalScope/indexedDB
+original_slug: Web/API/WindowOrWorkerGlobalScope/indexedDB
 ---
 <p>{{ APIRef() }}</p>
 
diff --git a/files/es/web/api/windoworworkerglobalscope/issecurecontext/index.html b/files/es/web/api/issecurecontext/index.html
index a99c499c7c..a1e631007e 100644
--- a/files/es/web/api/windoworworkerglobalscope/issecurecontext/index.html
+++ b/files/es/web/api/issecurecontext/index.html
@@ -1,7 +1,8 @@
 ---
 title: WindowOrWorkerGlobalScope.isSecureContext
-slug: Web/API/WindowOrWorkerGlobalScope/isSecureContext
+slug: Web/API/isSecureContext
 translation_of: Web/API/WindowOrWorkerGlobalScope/isSecureContext
+original_slug: Web/API/WindowOrWorkerGlobalScope/isSecureContext
 ---
 <p>{{APIRef()}}{{SeeCompatTable}}</p>
 
diff --git a/files/es/web/api/uievent/pagex/index.html b/files/es/web/api/mouseevent/pagex/index.html
index fbd75e26f8..7eca1c67bb 100644
--- a/files/es/web/api/uievent/pagex/index.html
+++ b/files/es/web/api/mouseevent/pagex/index.html
@@ -1,11 +1,12 @@
 ---
 title: event.pageX
-slug: Web/API/UIEvent/pageX
+slug: Web/API/MouseEvent/pageX
 tags:
   - DOM
   - Referencia_DOM_de_Gecko
   - Todas_las_Categorías
 translation_of: Web/API/UIEvent/pageX
+original_slug: Web/API/UIEvent/pageX
 ---
 <p>{{ ApiRef() }}</p>
 <h3 id="Sumario" name="Sumario">Sumario</h3>
diff --git a/files/es/web/api/windoworworkerglobalscope/setinterval/index.html b/files/es/web/api/setinterval/index.html
index a00e4b2c93..381711900a 100644
--- a/files/es/web/api/windoworworkerglobalscope/setinterval/index.html
+++ b/files/es/web/api/setinterval/index.html
@@ -1,6 +1,6 @@
 ---
 title: WindowTimers.setInterval()
-slug: Web/API/WindowOrWorkerGlobalScope/setInterval
+slug: Web/API/setInterval
 tags:
   - API
   - DOM
@@ -12,7 +12,7 @@ tags:
   - WindowTimers
   - setInterval
 translation_of: Web/API/WindowOrWorkerGlobalScope/setInterval
-original_slug: Web/API/WindowTimers/setInterval
+original_slug: Web/API/WindowOrWorkerGlobalScope/setInterval
 ---
 <div>{{APIRef("HTML DOM")}}</div>
 
diff --git a/files/es/web/api/windoworworkerglobalscope/settimeout/index.html b/files/es/web/api/settimeout/index.html
index 7b15ffa392..aa531c471d 100644
--- a/files/es/web/api/windoworworkerglobalscope/settimeout/index.html
+++ b/files/es/web/api/settimeout/index.html
@@ -1,13 +1,13 @@
 ---
 title: WindowOrWorkerGlobalScope.setTimeout
-slug: Web/API/WindowOrWorkerGlobalScope/setTimeout
+slug: Web/API/setTimeout
 tags:
   - API
   - HTML DOM
   - WindowOrWorkerGlobalScope
   - setTimeout
 translation_of: Web/API/WindowOrWorkerGlobalScope/setTimeout
-original_slug: Web/API/WindowTimers/setTimeout
+original_slug: Web/API/WindowOrWorkerGlobalScope/setTimeout
 ---
 <div>{{APIRef("HTML DOM")}}</div>
 
diff --git a/files/es/web/css/column-gap/index.html b/files/es/web/css/column-gap/index.html
index fc08233bee..b97fb87f29 100644
--- a/files/es/web/css/column-gap/index.html
+++ b/files/es/web/css/column-gap/index.html
@@ -102,7 +102,7 @@ grid-column-gap: unset;
  <li>Guía sobre CSS Grid Layout: <em><a href="/en-US/docs/Web/CSS/CSS_Grid_Layout/Basic_Concepts_of_Grid_Layout#Gutters">Conceptos básicos sobre CSS Grid Layout - Gutters</a></em></li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><strong> <a href="/en-US/docs/Web/CSS/Reference">Referencia CSS</a></strong></li>
diff --git a/files/es/web/css/css_background_and_borders/border-image_generator/index.html b/files/es/web/css/css_backgrounds_and_borders/border-image_generator/index.html
index 17cb7b70bc..13a073100e 100644
--- a/files/es/web/css/css_background_and_borders/border-image_generator/index.html
+++ b/files/es/web/css/css_backgrounds_and_borders/border-image_generator/index.html
@@ -1,11 +1,11 @@
 ---
 title: Generador Border-image
-slug: Web/CSS/CSS_Background_and_Borders/Border-image_generator
+slug: Web/CSS/CSS_Backgrounds_and_Borders/Border-image_generator
 tags:
   - CSS
   - Herramientas
 translation_of: Web/CSS/CSS_Background_and_Borders/Border-image_generator
-original_slug: Web/CSS/CSS_Background_and_Borders/Border-image_generador
+original_slug: Web/CSS/CSS_Background_and_Borders/Border-image_generator
 ---
 <p>Esta herramienta permite generar valores para CSS3 {{cssxref("border-image")}}</p>
 <div class="hidden">
diff --git a/files/es/web/css/css_background_and_borders/border-radius_generator/index.html b/files/es/web/css/css_backgrounds_and_borders/border-radius_generator/index.html
index f445dff39b..bd0dc7e058 100644
--- a/files/es/web/css/css_background_and_borders/border-radius_generator/index.html
+++ b/files/es/web/css/css_backgrounds_and_borders/border-radius_generator/index.html
@@ -1,9 +1,10 @@
 ---
 title: Generador de border-radius
-slug: Web/CSS/CSS_Background_and_Borders/Border-radius_generator
+slug: Web/CSS/CSS_Backgrounds_and_Borders/Border-radius_generator
 tags:
   - Herramientas
 translation_of: Web/CSS/CSS_Background_and_Borders/Border-radius_generator
+original_slug: Web/CSS/CSS_Background_and_Borders/Border-radius_generator
 ---
 <p>Esta herramienta puede ser usada para generar efectos de {{cssxref("border-radius")}} de CSS3.</p>
 
diff --git a/files/es/web/css/css_flow_layout/index.html b/files/es/web/css/css_flow_layout/index.html
index 45daafc7a4..7a9d5a763d 100644
--- a/files/es/web/css/css_flow_layout/index.html
+++ b/files/es/web/css/css_flow_layout/index.html
@@ -35,7 +35,7 @@ translation_of: Web/CSS/CSS_Flow_Layout
  <li>{{Glossary("Block/CSS", "Block (CSS)")}}</li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/en-US/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/css_grid_layout/auto-placement_in_css_grid_layout/index.html b/files/es/web/css/css_grid_layout/auto-placement_in_css_grid_layout/index.html
index 3b0aac0c26..9b22e46e0d 100644
--- a/files/es/web/css/css_grid_layout/auto-placement_in_css_grid_layout/index.html
+++ b/files/es/web/css/css_grid_layout/auto-placement_in_css_grid_layout/index.html
@@ -554,7 +554,7 @@ dd {
 
 <p><span class="notranslate">Puede ser que se te ocurran tus propios casos de uso para la colocación automática o cualquier otra parte del diseño de la cuadrícula.</span> <span class="notranslate"> Si lo hace, créelos como problemas o agréguelos a un problema existente que podría resolver su caso de uso.</span> <span class="notranslate"> Esto ayudará a mejorar las futuras versiones de la especificación.</span></p>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/en-US/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/css_grid_layout/basic_concepts_of_grid_layout/index.html b/files/es/web/css/css_grid_layout/basic_concepts_of_grid_layout/index.html
index 26cff270b6..87214ed390 100644
--- a/files/es/web/css/css_grid_layout/basic_concepts_of_grid_layout/index.html
+++ b/files/es/web/css/css_grid_layout/basic_concepts_of_grid_layout/index.html
@@ -663,7 +663,7 @@ original_slug: Web/CSS/CSS_Grid_Layout/Conceptos_Básicos_del_Posicionamiento_co
 
 <p>En este artículo hemos tenido una mirada muy rápida a través de la Especificación de Grid Layout. Juegue un poco con los ejemplos de código, y luego pase a <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/Relationship_of_Grid_Layout">la siguiente parte de esta guía donde realmente nos vamos a adentrar en detalle dentro de CSS Grid Layout</a>.</p>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/es/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/es/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/css_grid_layout/box_alignment_in_css_grid_layout/index.html b/files/es/web/css/css_grid_layout/box_alignment_in_css_grid_layout/index.html
index 445cbac308..9880ecd33d 100644
--- a/files/es/web/css/css_grid_layout/box_alignment_in_css_grid_layout/index.html
+++ b/files/es/web/css/css_grid_layout/box_alignment_in_css_grid_layout/index.html
@@ -644,7 +644,7 @@ translation_of: Web/CSS/CSS_Grid_Layout/Box_Alignment_in_CSS_Grid_Layout
 
 <p>Setting auto margins, using <code>margin-right</code> or <code>margin-left</code> however, or absolutely positioning items using the <code>top</code>, <code>right</code>, <code>bottom</code> and <code>left</code> offsets would not honor writing modes. In the next guide, we will look further into this interaction between CSS grid layout, box alignment and writing modes. This will be important to understand, if you develop sites that are then displayed in multiple languages, or if you want to mix languages or writing modes in a design.</p>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/en-US/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/css_grid_layout/index.html b/files/es/web/css/css_grid_layout/index.html
index d26c21f5fa..042d1f04fb 100644
--- a/files/es/web/css/css_grid_layout/index.html
+++ b/files/es/web/css/css_grid_layout/index.html
@@ -190,7 +190,7 @@ translation_of: Web/CSS/CSS_Grid_Layout
  </tbody>
 </table>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <section class="Quick_links" id="Enlaces_Rapidos">
 <ol>
  <li><a href="/es/docs/Web/CSS"><strong>CSS</strong></a></li>
diff --git a/files/es/web/css/css_grid_layout/realizing_common_layouts_using_css_grid_layout/index.html b/files/es/web/css/css_grid_layout/realizing_common_layouts_using_css_grid_layout/index.html
index d477402114..352c321708 100644
--- a/files/es/web/css/css_grid_layout/realizing_common_layouts_using_css_grid_layout/index.html
+++ b/files/es/web/css/css_grid_layout/realizing_common_layouts_using_css_grid_layout/index.html
@@ -538,7 +538,7 @@ translation_of: Web/CSS/CSS_Grid_Layout/Realizing_common_layouts_using_CSS_Grid_
  <li>ara obtener patrones de diseño comunes adicionales, consulta <em><a href="http://gridbyexample.com">Grid by Example</a></em>, donde hay muchos ejemplos&gt; de diseño de cuadrícula y también algunos patrones de interfaz de usuario más grandes y diseños de página completa.</li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/es/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/es/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/css_grid_layout/relationship_of_grid_layout/index.html b/files/es/web/css/css_grid_layout/relationship_of_grid_layout/index.html
index f747b94b5d..df0c949072 100644
--- a/files/es/web/css/css_grid_layout/relationship_of_grid_layout/index.html
+++ b/files/es/web/css/css_grid_layout/relationship_of_grid_layout/index.html
@@ -584,7 +584,7 @@ original_slug: Web/CSS/CSS_Grid_Layout/Relacion_de_Grid_Layout
 
 <p>Como puedes ver en esta guía, CSS Grid Layout es sólo una parte de tu kit de herramientas. No tengas miedo de mezclarlo con otros métodos de maquetación, para conseguir los diferentes efectos que necesitas.</p>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/es/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/es/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/gap/index.html b/files/es/web/css/gap/index.html
index 090d6e9957..70da3da759 100644
--- a/files/es/web/css/gap/index.html
+++ b/files/es/web/css/gap/index.html
@@ -196,7 +196,7 @@ grid-gap: unset;
  <li>Grid Layout Guide: <em><a href="/en-US/docs/Web/CSS/CSS_Grid_Layout/Basic_Concepts_of_Grid_Layout#Gutters">Basic concepts of grid layout - Gutters</a></em></li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/en-US/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/grid-auto-columns/index.html b/files/es/web/css/grid-auto-columns/index.html
index 6e5aea4e5a..ad18820261 100644
--- a/files/es/web/css/grid-auto-columns/index.html
+++ b/files/es/web/css/grid-auto-columns/index.html
@@ -154,7 +154,7 @@ grid-auto-columns: unset;
  <li>Video tutorial (inglés): <em><a href="http://gridbyexample.com/video/series-auto-placement-order/">Introducing Grid auto-placement and order</a></em></li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><strong><a href="/en-US/docs/Web/CSS/Reference">R</a>eferencia a  CSS</strong></li>
diff --git a/files/es/web/css/grid-auto-rows/index.html b/files/es/web/css/grid-auto-rows/index.html
index cdcf192391..d59decd2b8 100644
--- a/files/es/web/css/grid-auto-rows/index.html
+++ b/files/es/web/css/grid-auto-rows/index.html
@@ -147,7 +147,7 @@ grid-auto-rows: unset;
  <li>Video tutorial: <em><a href="http://gridbyexample.com/video/series-auto-placement-order/">Introducing Grid auto-placement and order</a></em></li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/en-US/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/grid-template-areas/index.html b/files/es/web/css/grid-template-areas/index.html
index 215ca0b81f..7a5798c4b5 100644
--- a/files/es/web/css/grid-template-areas/index.html
+++ b/files/es/web/css/grid-template-areas/index.html
@@ -176,7 +176,7 @@ grid-template-areas: unset;
  <li>Video tutorial: <em><a href="http://gridbyexample.com/video/grid-template-areas/">Grid Template Areas</a></em></li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/en-US/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/grid-template-columns/index.html b/files/es/web/css/grid-template-columns/index.html
index 63c5bba16d..aba02c3d40 100644
--- a/files/es/web/css/grid-template-columns/index.html
+++ b/files/es/web/css/grid-template-columns/index.html
@@ -131,7 +131,7 @@ grid-template-columns: unset;
  <li>Video tutorial: <em><a href="http://gridbyexample.com/video/series-define-a-grid/">Defining a Grid</a></em></li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/en-US/docs/Web/CSS/Reference"><strong>Referencia CSS</strong></a></li>
diff --git a/files/es/web/css/grid-template-rows/index.html b/files/es/web/css/grid-template-rows/index.html
index c3f072c7b3..3db676f169 100644
--- a/files/es/web/css/grid-template-rows/index.html
+++ b/files/es/web/css/grid-template-rows/index.html
@@ -158,7 +158,7 @@ grid-template-rows: unset;
  <li>Video tutorial: <em><a href="http://gridbyexample.com/video/series-define-a-grid/">Defining a Grid</a></em></li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/en-US/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/grid/index.html b/files/es/web/css/grid/index.html
index 11c689058f..1657f4d988 100644
--- a/files/es/web/css/grid/index.html
+++ b/files/es/web/css/grid/index.html
@@ -180,7 +180,7 @@ grid: unset;
  <li>Grid Layout Guide: <em><a href="/en-US/docs/Web/CSS/CSS_Grid_Layout/Grid_Template_Areas#Grid_definition_shorthands">Grid template areas - Grid definition shorthands</a></em></li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/en-US/docs/Web/CSS/Reference"><strong>CSS Reference</strong></a></li>
diff --git a/files/es/web/css/minmax()/index.html b/files/es/web/css/minmax()/index.html
index aee4d66659..4b91d4aee7 100644
--- a/files/es/web/css/minmax()/index.html
+++ b/files/es/web/css/minmax()/index.html
@@ -154,7 +154,7 @@ minmax(auto, 300px)
  </li>
 </ul>
 
-<section class="Quick_links" id="Quick_Links">
+<section id="Quick_links">
 <ol>
  <li><a href="/en-US/docs/Web/CSS"><strong>CSS</strong></a></li>
  <li><a href="/en-US/docs/Web/CSS/Reference"><strong>Referencia CSS</strong></a></li>
diff --git a/files/es/web/css/tools/index.html b/files/es/web/css/tools/index.html
deleted file mode 100644
index 3ea9e20a3f..0000000000
--- a/files/es/web/css/tools/index.html
+++ /dev/null
@@ -1,29 +0,0 @@
----
-title: Herramientas
-slug: Web/CSS/Tools
-tags:
-  - CSS
-translation_of: Web/CSS/Tools
-original_slug: Web/CSS/Herramientas
----
-<div> </div>
-
-<p><span id="result_box" lang="es"><span>CSS</span> <span>ofrece una serie de</span> <span>características poderosas</span> <span>que puede ser</span> <span>difíciles de usar</span><span>,</span> <span>o tener un gran</span> <span>número de</span> <span>parámetros, por lo</span> <span>que es</span> <span>muy útil</span> <span>visualizarlos</span> <span>mientras se trabaja en</span> <span>ellos.</span> <span>Esta página</span> <span>ofrece</span> <span>enlaces a</span> <span>una serie de herramientas</span> <span>que</span> <span>le ayudarán a construir sus estilos usando estas caracteristicas</span><span>.</span></span></p>
-
-<p>{{LandingPageListSubpages}}</p>
-
-<h2 id="Otras_herramientas">Otras herramientas</h2>
-
-<ul>
- <li>
-  <h4 id="Animación_CSS_-_Stylie">Animación CSS - <a href="http://jeremyckahn.github.io/stylie/">Stylie</a></h4>
- </li>
- <li><span id="result_box" lang="es"><span>Para</span> <span>comprobar la información de</span> <span>la pantalla del dispositivo</span></span> (helpful in {{Glossary("responsive web design")}}) - <a href="http://mydevice.io">mydevice.io</a></li>
- <li>Menus CSS- <a href="http://cssmenumaker.com/">cssmenumaker.com</a></li>
-</ul>
-
-<h2 id="Temas_relacionados">Temas relacionados</h2>
-
-<ul>
- <li><a href="/es/docs/Web/CSS" title="/en-US/docs/Web/CSS">CSS</a></li>
-</ul>
diff --git a/files/es/web/demos_of_open_web_technologies/index.html b/files/es/web/demos/index.html
index 27e6816192..a7cf5325ce 100644
--- a/files/es/web/demos_of_open_web_technologies/index.html
+++ b/files/es/web/demos/index.html
@@ -1,6 +1,6 @@
 ---
 title: Demostraciones de tecnologías de Web Abierta
-slug: Web/Demos_of_open_web_technologies
+slug: Web/Demos
 tags:
   - 2D
   - 3D
@@ -12,6 +12,7 @@ tags:
   - Video
   - transform
 translation_of: Web/Demos_of_open_web_technologies
+original_slug: Web/Demos_of_open_web_technologies
 ---
 <p>Mozilla soporta una amplia variedad de emocionantes tecnologías web abiertas, y alentamos su utilización.  Esta página ofrece enlaces a interesantes demostraciones de estas tecnologías, incluyendo algunas que fueron populares en la Demo Studio, la cual <a href="https://blog.mozilla.org/community/2015/12/18/saying-goodbye-to-demo-studio/">ha sido retirada desde entonces</a>. Si conoces una buena demostración o aplicación de tecnología web abierta, por favor agrega el enlace a la sección apropiada aquí.</p>