toolbox:ignore some styles to have consistent rendering

dream/platform/src/toolbox/toolbox.js

@@ -61,7 +61,10 @@
             tool.title = _class.description;
           }
           Object.keys(_class.css || {}).forEach(function (k) {
-            tool.style[k] = _class.css[k];
+            // some styles are ignored here, to keep the rendering of toolbox consistent.
+            if (k != "line-height") {
+              tool.style[k] = _class.css[k];
+            }
           });
           tools_container.appendChild(tool);
         }