fix find cc image

common.py

@@ -374,7 +374,10 @@ global_div = Div(
     ),
     Section(
         H3("Finding Connected Components using MapReduce"),
-        Img(src="images/findcc.svg", style="max-width: 100%;"),
+        Img(
+            src="images/findcc.svg",
+            style="max-width: 100%; display: block; margin: 0 auto; padding: 30px;",
+        ),
         P(
             "The purpose of this step is to create a set of clusters of matching pairs. For example, a list of pairs (A, B), (B, C), (D, E) is merged into a list of components (A, B, C) and (D, E). Using a third-party library like NetworkX to find connected components would require all pairs to fit into the memory of a single machine, which is not feasible. Instead, we implemented a distributed connected component finder",
             D_cite(bibtex_key="6785473"),