fix: add base style for frequently used hr

src/tailwind.css

@@ -144,6 +144,11 @@ thead .fc-day-selected:hover {
     font-size: 0.9em;
     padding: 0.2em 0.5em;
   }
+
+  hr {
+    @apply tw-my-4;
+    border-top: 1px solid rgb(0 0 0 / 0.1);
+  }
 }
 
 @layer utilities {