diff --git a/src/ace/theme/Clouds.js b/src/ace/theme/Clouds.js
index 67e2b330..fb079b87 100644
--- a/src/ace/theme/Clouds.js
+++ b/src/ace/theme/Clouds.js
@@ -17,7 +17,7 @@ require.def("ace/theme/Clouds",
 }\
 \
 .ace-clouds .ace_gutter-layer {\
-  right: 0px;\
+  width: 100%;\
   text-align: right;\
 }\
 \
diff --git a/src/ace/theme/CloudsMidnight.js b/src/ace/theme/CloudsMidnight.js
index 4cf16ad7..e2b1cfdd 100644
--- a/src/ace/theme/CloudsMidnight.js
+++ b/src/ace/theme/CloudsMidnight.js
@@ -17,7 +17,7 @@ require.def("ace/theme/CloudsMidnight",
 }\
 \
 .ace-clouds-midnight .ace_gutter-layer {\
-  right: 0px;\
+  width: 100%;\
   text-align: right;\
 }\
 \
diff --git a/src/ace/theme/Cobalt.js b/src/ace/theme/Cobalt.js
index 08ec21d8..893f85fb 100644
--- a/src/ace/theme/Cobalt.js
+++ b/src/ace/theme/Cobalt.js
@@ -17,7 +17,7 @@ require.def("ace/theme/Cobalt",
 }\
 \
 .ace-cobalt .ace_gutter-layer {\
-  right: 0px;\
+  width: 100%;\
   text-align: right;\
 }\
 \
diff --git a/src/ace/theme/Dawn.js b/src/ace/theme/Dawn.js
index 621709ab..73841545 100644
--- a/src/ace/theme/Dawn.js
+++ b/src/ace/theme/Dawn.js
@@ -17,7 +17,7 @@ require.def("ace/theme/Dawn",
 }\
 \
 .ace-dawn .ace_gutter-layer {\
-  right: 0px;\
+  width: 100%;\
   text-align: right;\
 }\
 \
diff --git a/src/ace/theme/IdleFingers.js b/src/ace/theme/IdleFingers.js
index 5d2254f0..1fa9f1f7 100644
--- a/src/ace/theme/IdleFingers.js
+++ b/src/ace/theme/IdleFingers.js
@@ -17,7 +17,7 @@ require.def("ace/theme/IdleFingers",
 }\
 \
 .ace-idle-fingers .ace_gutter-layer {\
-  right: 0px;\
+  width: 100%;\
   text-align: right;\
 }\
 \
diff --git a/src/ace/theme/KrTheme.js b/src/ace/theme/KrTheme.js
index 69b11fd3..08e2278c 100644
--- a/src/ace/theme/KrTheme.js
+++ b/src/ace/theme/KrTheme.js
@@ -17,7 +17,7 @@ require.def("ace/theme/KrTheme",
 }\
 \
 .ace-kr-theme .ace_gutter-layer {\
-  right: 0px;\
+  width: 100%;\
   text-align: right;\
 }\
 \
diff --git a/src/ace/theme/MonoIndustrial.js b/src/ace/theme/MonoIndustrial.js
index 964c1465..e606ff0d 100644
--- a/src/ace/theme/MonoIndustrial.js
+++ b/src/ace/theme/MonoIndustrial.js
@@ -17,7 +17,7 @@ require.def("ace/theme/MonoIndustrial",
 }\
 \
 .ace-mono-industrial .ace_gutter-layer {\
-  right: 0px;\
+  width: 100%;\
   text-align: right;\
 }\
 \
diff --git a/src/ace/theme/Monokai.js b/src/ace/theme/Monokai.js
index 8c811cd8..7a2b60d0 100644
--- a/src/ace/theme/Monokai.js
+++ b/src/ace/theme/Monokai.js
@@ -17,7 +17,7 @@ require.def("ace/theme/Monokai",
 }\
 \
 .ace-monokai .ace_gutter-layer {\
-  right: 0px;\
+  width: 100%;\
   text-align: right;\
 }\
 \
diff --git a/src/ace/theme/Twilight.js b/src/ace/theme/Twilight.js
index 58d97192..2b82c13b 100644
--- a/src/ace/theme/Twilight.js
+++ b/src/ace/theme/Twilight.js
@@ -17,7 +17,7 @@ require.def("ace/theme/Twilight",
 }\
 \
 .ace-twilight .ace_gutter-layer {\
-  right: 0px;\
+  width: 100%;\
   text-align: right;\
 }\
 \
diff --git a/tool/Theme.tmpl.css b/tool/Theme.tmpl.css
index 5d658f8a..8d67d46b 100644
--- a/tool/Theme.tmpl.css
+++ b/tool/Theme.tmpl.css
@@ -14,7 +14,7 @@
 }
 
 .%cssClass% .ace_gutter-layer {
-  right: 0px;
+  width: 100%;
   text-align: right;
 }