Replace inline styles with classes

docs/popover-scenarios.html

@@ -129,7 +129,7 @@
           class="h-64 overflow-auto rounded-xl border border-border bg-surface-alt p-md"
           data-test-scroll-region
         >
-          <div class="space-y-lg" style="height: 720px">
+          <div class="space-y-lg docs-popover-scenarios__scroll-spacer">
             <p class="text-sm text-muted">
               Scroll to the bottom to find the trigger used in automated tests.
             </p>