diff --git a/_src/_assets/styles/_page-guides.scss b/_src/_assets/styles/_page-guides.scss
index a8d5978..3fe97f4 100644
--- a/_src/_assets/styles/_page-guides.scss
+++ b/_src/_assets/styles/_page-guides.scss
@@ -50,7 +50,7 @@
         border-radius: $border-radius;
 
         &:before {
-            opacity: .9;
+            opacity: .85;
         }
 
         &:hover,
diff --git a/_src/_assets/styles/bigchain/_header.scss b/_src/_assets/styles/bigchain/_header.scss
index b272d80..ff0947d 100644
--- a/_src/_assets/styles/bigchain/_header.scss
+++ b/_src/_assets/styles/bigchain/_header.scss
@@ -1,7 +1,7 @@
 .header {
     @extend .background--photo;
     background-image: url('../img/header-berlin.jpg');
-    background-position: center bottom;
+    background-position: center center;
 }
 
 .header__content {
diff --git a/_src/_guides/header-car.jpg b/_src/_guides/header-car.jpg
new file mode 100644
index 0000000..5d57931
Binary files /dev/null and b/_src/_guides/header-car.jpg differ
diff --git a/_src/_guides/tutorial-car-telemetry-app.md b/_src/_guides/tutorial-car-telemetry-app.md
index 5c7b676..f59247b 100644
--- a/_src/_guides/tutorial-car-telemetry-app.md
+++ b/_src/_guides/tutorial-car-telemetry-app.md
@@ -3,7 +3,7 @@ layout: guide
 
 title: "Tutorial: Car Telemetry App"
 tagline: Learn how to build telemetry apps to track specific dynamic parameters of an asset.
-header: photo4.jpg
+header: header-car.jpg
 ---
 
 You will learn:
diff --git a/_src/_includes/header.html b/_src/_includes/header.html
index f4c78a5..0452362 100644
--- a/_src/_includes/header.html
+++ b/_src/_includes/header.html
@@ -1,5 +1,11 @@
-<header role="banner" class="header" {% if page.header %}style="background-image:url('/assets/img/{{ page.header }}')" {%
-    endif %}>
+<header role="banner" class="header"
+    {% if page.header %}
+        {% if page.path contains '_guides' %}
+        style="background-image:url('../{{ page.header }}')"
+        {% else %}
+        style="background-image:url('/assets/img/{{ page.header }}')"
+        {% endif %}
+    {% endif %}>
 
     {% include menu-main.html %}
 
diff --git a/_src/_includes/sections/section-guides.html b/_src/_includes/sections/section-guides.html
index 83a1021..bde7dbc 100644
--- a/_src/_includes/sections/section-guides.html
+++ b/_src/_includes/sections/section-guides.html
@@ -10,7 +10,7 @@
             {% for guide in site.guides limit: 4 %}
             <div class="grid__col">
                 <article class="guide">
-                    <a href="{{ guide.url }}" {% if guide.header %}style="background-image:url('/assets/img/{{ guide.header }}')" {% endif %}>
+                    <a href="{{ guide.url }}" {% if guide.header %}style="background-image:url('/guides/{{ guide.header }}')" {% endif %}>
                         <h1 class="guide__title">{{ guide.title }}</h1>
                         <p class="guide__tagline">{{ guide.tagline }}</p>
                     </a>
diff --git a/_src/_layouts/guide.html b/_src/_layouts/guide.html
index db44afe..e13435e 100644
--- a/_src/_layouts/guide.html
+++ b/_src/_layouts/guide.html
@@ -24,7 +24,7 @@ layout: base
                 {% unless page.id == guide.id %}
                     <div class="grid__col">
                         <article class="guide">
-                            <a href="{{ guide.url }}" {% if guide.header %}style="background-image:url('/assets/img/{{ guide.header }}')" {% endif %}>
+                            <a href="{{ guide.url }}" {% if guide.header %}style="background-image:url('../{{ guide.header }}')" {% endif %}>
                                 <h1 class="guide__title">{{ guide.title }}</h1>
                             </a>
                         </article>
diff --git a/_src/guides.html b/_src/guides.html
index fec7eaa..e006df4 100644
--- a/_src/guides.html
+++ b/_src/guides.html
@@ -11,7 +11,7 @@ tagline: "These guides explain you how to get started and build apps with Bigcha
             {% for guide in site.guides %}
                 <div class="grid__col">
                     <article class="guide">
-                        <a href="{{ guide.url }}" {% if guide.header %}style="background-image:url('/assets/img/{{ guide.header }}')" {% endif %}>
+                        <a href="{{ guide.url }}" {% if guide.header %}style="background-image:url('./{{ guide.header }}')" {% endif %}>
                             <h1 class="guide__title">{{ guide.title }}</h1>
                             <p class="guide__tagline">{{ guide.tagline }}</p>
                         </a>