Add Immediate Family section to person details in side panel

src/index.css

@@ -162,7 +162,7 @@ div.zoom {
 
 .details .item-header .header {
   text-transform: uppercase;
-  margin: 0;
+  margin: 0 0 8px 0;
   min-width: 40%;
 }
 
@@ -335,6 +335,14 @@ div.zoom {
   white-space: pre;
 }
 
+.parents-block {
+  margin-bottom: 7px;
+}
+
+.children-block {
+  display: flex;
+}
+
 @media (max-width: 450px) {
   /* Hide the title from the top bar when the viewport is too small to display
      it alongside the search box. */