diff --git a/gnucash/gnucash-fallback.css b/gnucash/gnucash-fallback.css
index ff16becee6..4077fed78d 100644
--- a/gnucash/gnucash-fallback.css
+++ b/gnucash/gnucash-fallback.css
@@ -21,15 +21,15 @@
 }
 
 .gnc-class-intervention-required-dark {
-  background-color: shade (@intervention-required_bg_color, 0.7);
+  background-color: shade(@intervention-required_bg_color, 0.7);
 }
 
 .gnc-class-intervention-probably-required-dark {
-  background-color: shade (@intervention-probably-required_bg_color, 0.8);
+  background-color: shade(@intervention-probably-required_bg_color, 0.8);
 }
 
 .gnc-class-intervention-not-required-dark {
-  background-color: shade (@intervention-not-required_bg_color, 0.3);
+  background-color: shade(@intervention-not-required_bg_color, 0.3);
 }
 
 /* Negative value label colors */
@@ -63,7 +63,7 @@ font-style: italic;
 }
 
 *.primary-dark {
-  background-color: shade (@primary_bg_color, 0.7);
+  background-color: shade(@primary_bg_color, 0.7);
 }
 
 *.secondary {
@@ -71,7 +71,7 @@ font-style: italic;
 }
 
 *.secondary-dark {
-  background-color: shade (@secondary_bg_color, 0.7);
+  background-color: shade(@secondary_bg_color, 0.7);
 }
 
 *.markers {
@@ -79,5 +79,5 @@ font-style: italic;
 }
 
 *.markers-dark {
-  background-color: shade (@marker_bg_color, 0.8);
+  background-color: shade(@marker_bg_color, 0.8);
 }
diff --git a/gnucash/gnucash.css b/gnucash/gnucash.css
index af46af8415..c6d50a2d46 100644
--- a/gnucash/gnucash.css
+++ b/gnucash/gnucash.css
@@ -43,7 +43,7 @@ gnc-id-cursor button {
 }
 
 *.gnc-class-register-primary:disabled {
-  background-color: mix (@register_primary_bg_color, grey, 0.2);
+  background-color: mix(@register_primary_bg_color, grey, 0.2);
 }
 
 *.gnc-class-register-secondary {
@@ -51,7 +51,7 @@ gnc-id-cursor button {
 }
 
 *.gnc-class-register-secondary:disabled {
-  background-color: mix (@register_secondary_bg_color, grey, 0.2);
+  background-color: mix(@register_secondary_bg_color, grey, 0.2);
 }
 
 *.gnc-class-register-split {
@@ -59,7 +59,7 @@ gnc-id-cursor button {
 }
 
 *.gnc-class-register-split:disabled {
-  background-color: mix (@register_split_bg_color, grey, 0.2);
+  background-color: mix(@register_split_bg_color, grey, 0.2);
 }
 
 *.gnc-class-register-cursor {
@@ -67,16 +67,16 @@ gnc-id-cursor button {
 }
 
 *.gnc-class-register-cursor:disabled {
-  background-color: mix (@register_cursor_bg_color, grey, 0.2);
+  background-color: mix(@register_cursor_bg_color, grey, 0.2);
 }
 
 /* Change font color by mixing with grey */
 .gnc-class-lighter-grey-mix {
-  color: mix (currentColor, grey, 0.8);
+  color: mix(currentColor, grey, 0.8);
 }
 
 .gnc-class-darker-grey-mix {
-  color: mix (currentColor, grey, 0.2);
+  color: mix(currentColor, grey, 0.2);
 }
 
 /* Highlight some text */