Reveal CSS display-block modification

ws/Docbook/CustomLayer/slide/reveal.css.patch

 diff -Naur css.orig/reveal.css css/reveal.css
---- css.orig/reveal.css	2017-11-10 19:16:04.856917041 +0100
-+++ css/reveal.css	2017-11-10 19:20:01.430825836 +0100
+--- css.orig/reveal.css	2018-05-30 16:09:42.483334660 +0200
++++ css/reveal.css	2018-05-30 16:06:22.359785184 +0200
 @@ -1,3 +1,13 @@
 +/*
 + *  patched by: /usr/share/hdm-docbook-xsl/CustomLayer/slide/reveal.css.patch
@@ -25,8 +25,8 @@ diff -Naur css.orig/reveal.css css/reveal.css
  .reveal article, .reveal aside, .reveal details, .reveal figcaption, .reveal figure,
  .reveal footer, .reveal header, .reveal hgroup, .reveal menu, .reveal nav, .reveal section {
 diff -Naur css.orig/theme/serif.css css/theme/serif.css
---- css.orig/theme/serif.css	2017-11-10 19:16:04.856917041 +0100
-+++ css/theme/serif.css	2017-11-10 19:15:40.417546318 +0100
+--- css.orig/theme/serif.css	2018-05-30 16:09:42.483334660 +0200
++++ css/theme/serif.css	2018-05-30 16:07:49.037908476 +0200
 @@ -1,3 +1,8 @@
 +/*
 + *  patched by: /usr/share/hdm-docbook-xsl/CustomLayer/slide/reveal.css.patch
@@ -47,7 +47,21 @@ diff -Naur css.orig/theme/serif.css css/theme/serif.css
    background-color: #F0F1EB; }
  
  .reveal {
-@@ -206,7 +215,7 @@
+@@ -139,10 +148,11 @@
+   font-style: italic; }
+ 
+ .reveal pre {
+-  display: block;
++  display: inline-block;
+   position: relative;
+-  width: 90%;
++  width: auto;
+   margin: 20px auto;
++  padding: 1em;
+   text-align: left;
+   font-size: 0.55em;
+   font-family: monospace;
+@@ -206,7 +216,7 @@
   *********************************************/
  .reveal a {
    color: #51483D;