Style lines with inline styles for performance

src/lines-component.coffee

@@ -105,7 +105,7 @@ LinesComponent = React.createClass
     {editor, mini, showIndentGuide} = @props
     {tokens, text, lineEnding, fold, isSoftWrapped, indentLevel} = line
     translate3d = @buildTranslate3d(top, left)
-    lineHTML = "<div class=\"line\" style=\"top: #{top}px;\">"
+    lineHTML = "<div class=\"line\" style=\"position: absolute; top: #{top}px;\">"
 
     if text is ""
       lineHTML += "&nbsp;"

static/editor.less

@@ -12,14 +12,6 @@
     z-index: -2;
   }
 
-  .lines {
-    z-index: 0;
-
-    > .line {
-      position: absolute;
-    }
-  }
-
   .cursor {
     z-index: 1;
   }