diff --git a/doc/doxygen/src/creating-an-application.md b/doc/doxygen/src/creating-an-application.md
index 8d0ddad030475c4c8e8cfa6ca2513b9ddaa21ebd..58f95b95611d9e567a5fb53adc642481fa2869ad 100644
--- a/doc/doxygen/src/creating-an-application.md
+++ b/doc/doxygen/src/creating-an-application.md
@@ -19,7 +19,7 @@ priorities - is the first thread that runs and calls the `main()` function.
 This function needs to be defined in the source code of the application
 (typically located in `main.c`).
 
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ {.c}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.c}
 #include <stdio.h>
 
 int main(void)
diff --git a/doc/doxygen/src/css/riot.css b/doc/doxygen/src/css/riot.css
index 15cfcd42c54c2a766b818a88184582d6564c01db..d84883e7c5aa09077261809470f7798fe151ef08 100644
--- a/doc/doxygen/src/css/riot.css
+++ b/doc/doxygen/src/css/riot.css
@@ -197,6 +197,7 @@ div.fragment {
   font-size: 14px;
   line-height: 1.42857143;
   margin: 0 0 10px;
+  padding: 10px;
   overflow: visible;
   page-break-inside: avoid;
   word-break: break-all;
diff --git a/doc/doxygen/src/css/riot.less b/doc/doxygen/src/css/riot.less
index 7c24737a56df32c81193cdcaef51a7333135d3d4..257d90687a8283f7724000253eefb8242d730dfb 100644
--- a/doc/doxygen/src/css/riot.less
+++ b/doc/doxygen/src/css/riot.less
@@ -185,6 +185,7 @@ div.fragment {
   font-size: @font-size-base;
   line-height: @line-height-base;
   margin: 0 0 10px;
+  padding: 10px;
   overflow: visible;
   page-break-inside: avoid;
   word-break: break-all;