diff --git a/default.dzslides b/default.dzslides
index 73ef045f1..892a434cb 100644
--- a/default.dzslides
+++ b/default.dzslides
@@ -16,7 +16,6 @@ $endif$
       code{white-space: pre-wrap;}
       span.smallcaps{font-variant: small-caps;}
       span.underline{text-decoration: underline;}
-      div.line-block{white-space: pre-line;}
       div.column{display: inline-block; vertical-align: top; width: 50%;}
 $if(quotes)$
       q { quotes: "“" "”" "‘" "’"; }
diff --git a/default.epub2 b/default.epub2
index 2abead3d0..cca9fcf6f 100644
--- a/default.epub2
+++ b/default.epub2
@@ -10,7 +10,6 @@
       code{white-space: pre-wrap;}
       span.smallcaps{font-variant: small-caps;}
       span.underline{text-decoration: underline;}
-      div.line-block{white-space: pre-line;}
       div.column{display: inline-block; vertical-align: top; width: 50%;}
 $if(quotes)$
       q { quotes: "“" "”" "‘" "’"; }
diff --git a/default.epub3 b/default.epub3
index ffe230507..b22714963 100644
--- a/default.epub3
+++ b/default.epub3
@@ -9,7 +9,6 @@
       code{white-space: pre-wrap;}
       span.smallcaps{font-variant: small-caps;}
       span.underline{text-decoration: underline;}
-      div.line-block{white-space: pre-line;}
       div.column{display: inline-block; vertical-align: top; width: 50%;}
 $if(quotes)$
       q { quotes: "“" "”" "‘" "’"; }
diff --git a/default.html4 b/default.html4
index a771599f7..714b3ff2e 100644
--- a/default.html4
+++ b/default.html4
@@ -18,7 +18,6 @@ $endif$
       code{white-space: pre-wrap;}
       span.smallcaps{font-variant: small-caps;}
       span.underline{text-decoration: underline;}
-      div.line-block{white-space: pre-line;}
       div.column{display: inline-block; vertical-align: top; width: 50%;}
 $if(quotes)$
       q { quotes: "“" "”" "‘" "’"; }
diff --git a/default.html5 b/default.html5
index 2272a0179..5c484f376 100644
--- a/default.html5
+++ b/default.html5
@@ -18,7 +18,6 @@ $endif$
       code{white-space: pre-wrap;}
       span.smallcaps{font-variant: small-caps;}
       span.underline{text-decoration: underline;}
-      div.line-block{white-space: pre-line;}
       div.column{display: inline-block; vertical-align: top; width: 50%;}
 $if(quotes)$
       q { quotes: "“" "”" "‘" "’"; }
diff --git a/default.latex b/default.latex
index a9191aa2a..c36bf8576 100644
--- a/default.latex
+++ b/default.latex
@@ -193,22 +193,34 @@ $if(beamer)$
 \widowpenalties 1 10000
 \raggedbottom
 $if(section-titles)$
+\setbeamertemplate{part page}{
+\centering
+\begin{beamercolorbox}[sep=16pt,center]{part title}
+  \usebeamerfont{part title}\insertpart\par
+\end{beamercolorbox}
+}
+\setbeamertemplate{section page}{
+\centering
+\begin{beamercolorbox}[sep=12pt,center]{part title}
+  \usebeamerfont{section title}\insertsection\par
+\end{beamercolorbox}
+}
+\setbeamertemplate{subsection page}{
+\centering
+\begin{beamercolorbox}[sep=8pt,center]{part title}
+  \usebeamerfont{subsection title}\insertsubsection\par
+\end{beamercolorbox}
+}
 \AtBeginPart{
-  \let\insertpartnumber\relax
-  \let\partname\relax
   \frame{\partpage}
 }
 \AtBeginSection{
   \ifbibliography
   \else
-    \let\insertsectionnumber\relax
-    \let\sectionname\relax
     \frame{\sectionpage}
   \fi
 }
 \AtBeginSubsection{
-  \let\insertsubsectionnumber\relax
-  \let\subsectionname\relax
   \frame{\subsectionpage}
 }
 $endif$
diff --git a/default.revealjs b/default.revealjs
index 9e3bc8d09..65ab09049 100644
--- a/default.revealjs
+++ b/default.revealjs
@@ -21,7 +21,6 @@ $endif$
       code{white-space: pre-wrap;}
       span.smallcaps{font-variant: small-caps;}
       span.underline{text-decoration: underline;}
-      div.line-block{white-space: pre-line;}
       div.column{display: inline-block; vertical-align: top; width: 50%;}
 $if(quotes)$
       q { quotes: "“" "”" "‘" "’"; }
diff --git a/default.s5 b/default.s5
index 33e539744..e9c36b4d4 100644
--- a/default.s5
+++ b/default.s5
@@ -19,7 +19,6 @@ $endif$
       code{white-space: pre-wrap;}
       span.smallcaps{font-variant: small-caps;}
       span.underline{text-decoration: underline;}
-      div.line-block{white-space: pre-line;}
       div.column{display: inline-block; vertical-align: top; width: 50%;}
 $if(quotes)$
       q { quotes: "“" "”" "‘" "’"; }
diff --git a/default.slideous b/default.slideous
index 4c5e6a7bd..ad58272ae 100644
--- a/default.slideous
+++ b/default.slideous
@@ -20,7 +20,6 @@ $endif$
       code{white-space: pre-wrap;}
       span.smallcaps{font-variant: small-caps;}
       span.underline{text-decoration: underline;}
-      div.line-block{white-space: pre-line;}
       div.column{display: inline-block; vertical-align: top; width: 50%;}
 $if(quotes)$
       q { quotes: "“" "”" "‘" "’"; }
diff --git a/default.slidy b/default.slidy
index 5bc237c91..98b8d669d 100644
--- a/default.slidy
+++ b/default.slidy
@@ -20,7 +20,6 @@ $endif$
       code{white-space: pre-wrap;}
       span.smallcaps{font-variant: small-caps;}
       span.underline{text-decoration: underline;}
-      div.line-block{white-space: pre-line;}
       div.column{display: inline-block; vertical-align: top; width: 50%;}
 $if(quotes)$
       q { quotes: "“" "”" "‘" "’"; }