diff --git a/addons/website/views/snippets.xml b/addons/website/views/snippets.xml
index 09711661bc9..d2b3cffbf60 100644
--- a/addons/website/views/snippets.xml
+++ b/addons/website/views/snippets.xml
@@ -14,8 +14,8 @@
 </template>
 
 <template id="s_cover" name="Cover">
-    <section class="s_cover parallax bg-black-50 oe_img_bg oe_custom_bg pt96 pb96" data-scroll-background-ratio="1">
-        <span class="s_parallax_bg" style="background-image: url('/web/image/website.s_cover_default_image'); background-position: 50% 0;"/>
+    <section class="s_cover parallax s_parallax_is_fixed bg-black-50 pt96 pb96" data-scroll-background-ratio="1">
+        <span class="s_parallax_bg oe_img_bg oe_custom_bg" style="background-image: url('/web/image/website.s_cover_default_image'); background-position: 50% 0;"/>
         <div class="container">
             <div class="row s_nb_column_fixed">
                 <div class="col-lg-12 s_title" data-name="Title">
@@ -74,8 +74,8 @@
 </template>
 
 <template id="s_banner" name="Banner">
-    <section class="s_banner parallax s_parallax_is_fixed oe_img_bg pt96 pb96" data-scroll-background-ratio="1">
-        <span class="s_parallax_bg" style="background-image: url('/web/image/website.s_banner_default_image'); background-position: 50% 0;"/>
+    <section class="s_banner parallax s_parallax_is_fixed pt96 pb96" data-scroll-background-ratio="1">
+        <span class="s_parallax_bg oe_img_bg oe_custom_bg" style="background-image: url('/web/image/website.s_banner_default_image'); background-position: 50% 0;"/>
         <div class="container">
             <div class="row s_nb_column_fixed">
                 <div class="col-lg-7 bg-white jumbotron rounded pt32 pb32" data-name="Box">
@@ -736,8 +736,8 @@
 </template>
 
 <template id="s_parallax" name="Parallax">
-    <section class="s_parallax s_parallax_is_fixed parallax bg-black-50 pt160 pb160" data-scroll-background-ratio="1">
-        <span class="s_parallax_bg" style="background-image: url('/web/image/website.s_parallax_default_image'); background-position: 50% 75%;"/>
+    <section class="s_parallax parallax s_parallax_is_fixed bg-black-50 pt160 pb160" data-scroll-background-ratio="1">
+        <span class="s_parallax_bg oe_img_bg oe_custom_bg" style="background-image: url('/web/image/website.s_parallax_default_image'); background-position: 50% 75%;"/>
         <div class="oe_structure">
             <section>
                 <div class="container">
diff --git a/addons/website_event/data/event_demo.xml b/addons/website_event/data/event_demo.xml
index ee8717824ab..e7d3c88ad3b 100644
--- a/addons/website_event/data/event_demo.xml
+++ b/addons/website_event/data/event_demo.xml
@@ -9,8 +9,8 @@
             <field name="website_published">True</field>
             <field name="twitter_hashtag">odoo</field>
             <field name="description"><![CDATA[
-<section class="s_cover parallax oe_img_bg oe_custom_bg pt96 pb96" data-scroll-background-ratio="1">
-    <span class="s_parallax_bg" style="background-image: url('/web/image/website.s_background_image_02'); background-position: 50% 100%;"/>
+<section class="s_cover parallax s_parallax_is_fixed pt96 pb96" data-scroll-background-ratio="1">
+    <span class="s_parallax_bg oe_img_bg oe_custom_bg" style="background-image: url('/web/image/website.s_background_image_02'); background-position: 50% 100%;"/>
     <div class="container">
         <div class="row s_nb_column_fixed">
             <div class="col-lg-12 s_title bg-black-50" data-name="Title">