Wrap body builder in fancy scrollbars

ui/src/flux/components/BodyBuilder.tsx

@@ -1,6 +1,7 @@
 import React, {PureComponent} from 'react'
 import _ from 'lodash'
 
+import FancyScrollbar from 'src/shared/components/FancyScrollbar'
 import ExpressionNode from 'src/flux/components/ExpressionNode'
 import VariableName from 'src/flux/components/VariableName'
 import FuncSelector from 'src/flux/components/FuncSelector'
@@ -62,6 +63,7 @@ class BodyBuilder extends PureComponent<Props> {
     })
 
     return (
+      <FancyScrollbar className="body-builder--container" autoHide={true}>
         <div className="body-builder">
           {_.flatten(bodybuilder)}
           <div className="declaration">
@@ -74,6 +76,7 @@ class BodyBuilder extends PureComponent<Props> {
             />
           </div>
         </div>
+      </FancyScrollbar>
     )
   }