fix(frontend): restore reference user popover button geometry

assets/css/build/public.css

@@ -916,6 +916,7 @@ strong, b {
 
 /* === Full width === */
 .btn-block {
+  display: block;
   width: 100%;
 }
 
@@ -2876,13 +2877,6 @@ main.container,
   color: var(--color-ink-2);
 }
 
-/* Keep the block CTA flush with the VIP row's padded inner width. */
-.aksrt-header-userbox > .mt6.em09 > .but.block {
-  display: block;
-  box-sizing: border-box;
-  width: 100%;
-}
-
 /* Top-nav bell badge (the card itself uses the legacy badge.top element). */
 .aksrt-nav-notification .aksrt-notification-badge {
   position: absolute;