Tweaks/cleanup

Author: GregMefford

2018-09-04_less-pain-embedded-systems-with-elixir-and-nerves/index.html

@@ -1364,7 +1364,10 @@
 
           <section data-markdown class="nav">
             <textarea data-template>
-              # Step 2 - Custom Systems
+              # Step 2 - Custom Nerves Systems
+              ![custom system docs](img/custom_system_hexdocs.png) <!-- .element: class="plain" style="height: 13em" -->
+              <br/>
+              [https://hexdocs.pm/nerves/systems.html#customizing-your-own-nerves-system](https://hexdocs.pm/nerves/systems.html#customizing-your-own-nerves-system) <!-- .element: class="attribution" -->
             </textarea>
           </section>
 
@@ -1377,15 +1380,6 @@
             </textarea>
           </section>
 
-          <section data-markdown>
-            <textarea data-template>
-              # Custom Nerves Systems
-              ![custom system docs](img/custom_system_hexdocs.png) <!-- .element: class="plain" style="height: 13em" -->
-              <br/>
-              [https://hexdocs.pm/nerves/systems.html#customizing-your-own-nerves-system](https://hexdocs.pm/nerves/systems.html#customizing-your-own-nerves-system) <!-- .element: class="attribution" -->
-            </textarea>
-          </section>
-
           <section data-markdown>
             <textarea data-template>
               # Shortcut
@@ -1980,14 +1974,8 @@
           </section>
 
           <section data-background-image="img/step6_index_html.png" data-background-size="contain"> </section>
-
-          <section data-markdown>
-            <textarea data-template>
-              ![css](img/step6_css_1.png) <!-- .element: class="plain" -->
-              ![css](img/step6_css_2.png) <!-- .element: class="plain" -->
-            </textarea>
-          </section>
-
+          <section data-background-image="img/step6_css_1.png" data-background-size="contain"> </section>
+          <section data-background-image="img/step6_css_2.png" data-background-size="contain"> </section>
           <section data-background-image="img/step6_schema_1.png" data-background-size="contain"> </section>
           <section data-background-image="img/step6_schema_2.png" data-background-size="contain"> </section>
           <section data-background-image="img/step6_schemas_barcode.png" data-background-size="contain"> </section>