Fix item size in geo playground

Author: bidoubiwa

playgrounds/geo-javascript/src/app.css

@@ -29,7 +29,10 @@ body {
   overflow: hidden;
   margin: 0 auto;
 }
-
+.ais-InfiniteHits-item {
+  margin-bottom: 1em;
+  width: calc(50% - 1rem);
+}
 .ais-Hits-item {
   margin-bottom: 1em;
   width: calc(50% - 1rem);