export default {
  body: {
    margin: "0",

    /* Support for all WebKit browsers. */
    WebkitFontSmoothing: "antialiased",
    /* Support for Firefox. */
    MozOsxFontSmoothing: "grayscale",
  },
};

export default {
  body: {
    margin: "0",
  },
};

--- 
+++ 
@@ -1,5 +1,10 @@
 export default {
   body: {
     margin: "0",
+
+    /* Support for all WebKit browsers. */
+    WebkitFontSmoothing: "antialiased",
+    /* Support for Firefox. */
+    MozOsxFontSmoothing: "grayscale",
   },
 };
Add font smoothing to docs
