Revert "Move …rest inside the Frame"

This reverts commit 051ef7f69d.

docs/CodeExample.js

@@ -34,12 +34,10 @@ export default function CodeExample(props) {
     }
     return (
       <LiveProvider {...liveProps}>
-        <BorderBox>
+        <BorderBox {...rest}>
           <BorderBox bg="white" border={0} borderBottom={1} borderRadius={0}>
             <Frame>
-              <div {...rest}>
-                <LivePreview />
-              </div>
+              <LivePreview />
             </Frame>
           </BorderBox>
           <Box is={Relative} bg="gray.1" p={3}>