reverting changes in docs-hub preview

preview-src/docs-hub.adoc

@@ -36,18 +36,6 @@ Write and execute Cypher queries and visualize the results in nodes and relation
 link:{docs-home}/browser-manual/[Neo4j Browser] +
 link:{docs-home}/aura/preview/query/introduction/[Query (Aura)]
 
-=== Neo4j Browser/Query
-
-[.icon]
-image:icons/ndl/icon-scientist.svg[]
-
-[.description]
-Write and execute Cypher queries and visualize the results in nodes and relationships.
-
-[.link]
-link:{docs-home}/browser-manual/[Neo4j Browser] +
-link:{docs-home}/aura/preview/query/introduction/[Query (Aura)]
-
 [.display.card.selectable]
 
 === Neo4j Data Importer

src/css/doc.css

@@ -640,7 +640,7 @@ body {
 
 .doc .olist li,
 .doc .ulist li {
-  margin-bottom: 0rem;
+  margin-bottom: 0;
 }
 
 .doc .olist li > div:first-of-type,