diff --git a/src/guiguts/data/html/html_header.txt b/src/guiguts/data/html/html_header.txt
index 75d42cd4..26799088 100644
--- a/src/guiguts/data/html/html_header.txt
+++ b/src/guiguts/data/html/html_header.txt
@@ -20,9 +20,9 @@ h1,h2,h3,h4,h5,h6 {
 }
 
 p {
-    margin-top: .51em;
+    margin-top: .5em;
     text-align: justify;
-    margin-bottom: .49em;
+    margin-bottom: .5em;
 }
 
 .p2       {margin-top: 2em;}
@@ -143,7 +143,7 @@ blockquote {
 
 .bbox     {border: 2px solid;}
 
-.center   {text-align: center;}
+.center   {text-align: center; text-indent: 0;}
 
 .right    {text-align: right;}
 
diff --git a/tests/expected/htmlconvert1.txt b/tests/expected/htmlconvert1.txt
index 4e67d476..b43f7591 100644
--- a/tests/expected/htmlconvert1.txt
+++ b/tests/expected/htmlconvert1.txt
@@ -20,9 +20,9 @@ h1,h2,h3,h4,h5,h6 {
 }
 
 p {
-    margin-top: .51em;
+    margin-top: .5em;
     text-align: justify;
-    margin-bottom: .49em;
+    margin-bottom: .5em;
 }
 
 .p2       {margin-top: 2em;}
@@ -143,7 +143,7 @@ blockquote {
 
 .bbox     {border: 2px solid;}
 
-.center   {text-align: center;}
+.center   {text-align: center; text-indent: 0;}
 
 .right    {text-align: right;}
 
diff --git a/tests/expected/htmlconvert2.txt b/tests/expected/htmlconvert2.txt
index 01e37672..6a1c0d78 100644
--- a/tests/expected/htmlconvert2.txt
+++ b/tests/expected/htmlconvert2.txt
@@ -20,9 +20,9 @@ h1,h2,h3,h4,h5,h6 {
 }
 
 p {
-    margin-top: .51em;
+    margin-top: .5em;
     text-align: justify;
-    margin-bottom: .49em;
+    margin-bottom: .5em;
 }
 
 .p2       {margin-top: 2em;}
@@ -143,7 +143,7 @@ blockquote {
 
 .bbox     {border: 2px solid;}
 
-.center   {text-align: center;}
+.center   {text-align: center; text-indent: 0;}
 
 .right    {text-align: right;}