Add link previews

Change-Id: I1792958844c18b4f4a65356dd5a07e3b2b39fcbc
diff --git a/client/src/components/CustomSelect.tsx b/client/src/components/CustomSelect.tsx
index c696eab..ca34d53 100644
--- a/client/src/components/CustomSelect.tsx
+++ b/client/src/components/CustomSelect.tsx
@@ -64,7 +64,7 @@
   padding: 0,
   paddingTop: '5px',
   paddingBottom: '8.5px',
-  zIndex: 1,
+  zIndex: 100,
   position: 'absolute',
   top: '-5px',
   listStyle: 'none',