move next-level-buttons on mobile

client/src/components/infoview/main.tsx

@@ -413,7 +413,9 @@ export function CommandLineInterface(props: { world: string, level: number, data
     <div className="content" ref={proofPanelRef}>
       <ExerciseStatement data={props.data} />
       <div className="tmp-pusher"></div>
-      {proof.length ? proof.map((step, i) => {
+      {proof.length ?
+        <>
+          {proof.map((step, i) => {
             if (i == proof.length - 1 && hasInteractiveErrors(step.errors)) {
               // if the last command contains an error, we only display the errors but not the
               // entered command as it is still present in the command line.
@@ -454,7 +456,10 @@ export function CommandLineInterface(props: { world: string, level: number, data
                     }
                   </div>
                 )}
-            {completed && i == proof.length - 1 &&
+              </div>
+            }
+          })}
+          {mobile && completed &&
             <div className="button-row">
               {props.level >= props.worldSize ?
                 <Button to={`/${gameId}`}>
@@ -467,9 +472,8 @@ export function CommandLineInterface(props: { world: string, level: number, data
               }
             </div>
           }
-          </div>
-        }
-      }) : <CircularProgress />}
+        </>
+      : <CircularProgress />}
     </div>
     <CommandLine proofPanelRef={proofPanelRef} />
   </div>