diff --git a/client/css/style.css b/client/css/style.css
index f1c4df1e..e5036c7f 100644
--- a/client/css/style.css
+++ b/client/css/style.css
@@ -546,11 +546,8 @@ button {
 }
 
 #main {
-	background: #fff;
-	border-radius: 2px;
 	bottom: 4px;
 	left: 220px;
-	overflow: hidden; /* Without this, border-radius has no effect */
 	position: absolute;
 	right: 5px;
 	top: 4px;
@@ -610,6 +607,7 @@ button {
 
 #windows .window {
 	background: #fff;
+	border-radius: 2px;
 	bottom: 0;
 	display: none;
 	left: 0;
diff --git a/client/themes/crypto.css b/client/themes/crypto.css
index 8fa95984..3179c5a3 100644
--- a/client/themes/crypto.css
+++ b/client/themes/crypto.css
@@ -38,6 +38,9 @@ a:hover,
 	right: 0;
 	bottom: 0;
 	top: 0;
+}
+
+#windows .window {
 	border-radius: 0;
 }
 
diff --git a/client/themes/morning.css b/client/themes/morning.css
index 14b6c230..7ec20035 100644
--- a/client/themes/morning.css
+++ b/client/themes/morning.css
@@ -68,12 +68,16 @@ body {
 	left: 0;
 	bottom: 0;
 	width: 220px;
+	border-radius: 0;
 }
 
 #main {
 	top: 0;
 	bottom: 0;
 	right: 0;
+}
+
+#windows .window {
 	border-radius: 0;
 }
 
diff --git a/client/themes/zenburn.css b/client/themes/zenburn.css
index 51acedae..5d77c6ca 100644
--- a/client/themes/zenburn.css
+++ b/client/themes/zenburn.css
@@ -95,12 +95,16 @@ body {
 	left: 0;
 	bottom: 0;
 	width: 220px;
+	border-radius: 0;
 }
 
 #main {
 	top: 0;
 	bottom: 0;
 	right: 0;
+}
+
+#windows .window {
 	border-radius: 0;
 }