Fixes the unprefixed gradient declaration

vyv03354 · vyv03354 · commit 2c504120b88c · 2013-04-30T20:24:01.000+09:00
diff --git a/web/viewer.css b/web/viewer.css
@@ -344,7 +344,7 @@ html[dir='rtl'] #sidebarContent {
   height: 100%;
   width: 50px;
 
-  background-image: linear-gradient(left, #999 0%, #fff 50%, #999 100%);
+  background-image: linear-gradient(to right, #999 0%, #fff 50%, #999 100%);
   background-size: 100% 100% no-repeat;
 
   -moz-animation: progressIndeterminate 2s linear infinite;
