Add textarea definitions to all styles; change "fixed" to "monospace" (more generic).

themes/css/sans-08.css

@@ -7,3 +7,7 @@ body, small {
 td, th {
   font-size: 8pt;
 }
+textarea, pre {
+  font-family: monospace;
+  font-size: 7pt;
+}

themes/css/sans-10.css

@@ -7,4 +7,7 @@ body, small {
 td, th {
   font-size: 10pt;
 }
-textarea, pre { font-family: fixed; font-size: 9pt; }
+textarea, pre {
+  font-family: monospace;
+  font-size: 9pt;
+}

themes/css/sans-12.css

@@ -6,4 +6,8 @@ body, small {
 }
 td, th {
   font-size: 12pt;
-}
+}
+textarea, pre {
+  font-family: monospace;
+  font-size: 11pt;
+}

themes/css/serif-10.css

@@ -7,4 +7,7 @@ body, small {
 td, th {
   font-size: 10pt;
 }
-textarea, pre { font-family: fixed; font-size: 9pt; }
+textarea, pre {
+  font-family: monospace;
+  font-size: 9pt;
+}

themes/css/serif-12.css

@@ -7,3 +7,7 @@ body, small {
 td, th {
   font-size: 12pt;
 }
+textarea, pre {
+  font-family: monospace;
+  font-size: 11pt;
+}