feat: improve scrollbars positions of timeline

assets/styles/_components.css

@@ -4,4 +4,5 @@
 @import "components/datatable.css";
 @import "components/datepicker.css";
 @import "components/toast.css";
-@import "components/tooltip.css";
+@import "components/tooltip.css";
+@import "components/timeline.css";