Move experiment scrollbar to bottom of page, make scenarios header sticky (#29)

* Remove newline from promptVariants router

* Move horizontal scroll bar to bottom of OutputsTable

* Make scenarios header sticky

src/components/OutputsTable/index.tsx

@@ -53,6 +53,9 @@ export default function OutputsTable({ experimentId }: { experimentId: string |
         rowSpan={headerRows}
         px={cellPadding.x}
         py={cellPadding.y}
+        // TODO: This is a hack to get the sticky header to work. It's not ideal because it's not responsive to the height of the header,
+        // so if the header height changes, this will need to be updated.
+        sx={{...stickyHeaderStyle, top: "-336px"}}
       >
         <HStack w="100%">
           <Heading size="xs" fontWeight="bold" flex={1}>