Extra nits

web/components/contract-select-modal.tsx

@@ -81,7 +81,7 @@ export function SelectMarketsModal(props: {
           </div>
         )}
 
-        <div className="overflow-y-auto sm:px-8">
+        <div className="overflow-y-auto px-2 sm:px-8">
           <ContractSearch
             hideOrderSelector
             onContractClick={addContract}
@@ -92,7 +92,7 @@ export function SelectMarketsModal(props: {
                 '!bg-indigo-100 outline outline-2 outline-indigo-300',
             }}
             additionalFilter={{}} /* hide pills */
-            headerClassName="bg-white"
+            headerClassName="bg-white sticky"
             {...contractSearchOptions}
           />
         </div>

web/pages/group/[...slugs]/index.tsx

@@ -198,7 +198,11 @@ export default function GroupPage(props: {
       {/* align the divs to the right */}
       <div className={' flex justify-end px-2 pb-2 sm:hidden'}>
         <div>
-          <JoinGroupButton group={group} user={user} />
+          <JoinOrAddQuestionsButtons
+            group={group}
+            user={user}
+            isMember={!!isMember}
+          />
         </div>
       </div>
       <ContractSearch