fix(margin): margin is controlled by ui-components, not us

Author: avivkeller

packages/react/src/html/ui/index.css

@@ -110,6 +110,7 @@ main {
     > h5,
     > h6 {
       flex: 1;
+      margin-top: 0;
       margin-bottom: 8px;
       overflow-wrap: anywhere;
       word-break: break-word;