diff --git a/sanic/handlers/directory.py b/sanic/handlers/directory.py
index 56042118..b2aac758 100644
--- a/sanic/handlers/directory.py
+++ b/sanic/handlers/directory.py
@@ -58,7 +58,7 @@ class DirectoryHandler:
     @classmethod
     def default_handler(
         cls, request: Request, exception: SanicIsADirectoryError
-    ) -> Optional[Union[HTTPResponse, Coroutine[Any, Any, HTTPResponse]]]:
+    ) -> Optional[Coroutine[Any, Any, HTTPResponse]]:
         if exception.autoindex or exception.index_name:
             maybe_response = DirectoryHandler(
                 exception.location, exception.autoindex, exception.index_name
diff --git a/sanic/mixins/routes.py b/sanic/mixins/routes.py
index 6b84d0d0..105d411f 100644
--- a/sanic/mixins/routes.py
+++ b/sanic/mixins/routes.py
@@ -27,7 +27,12 @@ from sanic.base.meta import SanicMeta
 from sanic.compat import stat_async
 from sanic.constants import DEFAULT_HTTP_CONTENT_TYPE, HTTP_METHODS
 from sanic.errorpages import RESPONSE_MAPPING
-from sanic.exceptions import FileNotFound, HeaderNotFound, RangeNotSatisfiable
+from sanic.exceptions import (
+    FileNotFound,
+    HeaderNotFound,
+    RangeNotSatisfiable,
+    SanicIsADirectoryError,
+)
 from sanic.handlers import ContentRangeHandler
 from sanic.log import error_logger
 from sanic.models.futures import FutureRoute, FutureStatic
@@ -910,7 +915,7 @@ class RouteMixin(metaclass=SanicMeta):
                     autoindex=autoindex,
                     index_name=index_name,
                 )
-        except RangeNotSatisfiable:
+        except (RangeNotSatisfiable, SanicIsADirectoryError):
             raise
         except FileNotFoundError:
             raise not_found
diff --git a/sanic/pages/base.py b/sanic/pages/base.py
index d88d922f..b11b9c6e 100644
--- a/sanic/pages/base.py
+++ b/sanic/pages/base.py
@@ -27,7 +27,7 @@ class BasePage(ABC):
 
     @property
     def style(self) -> str:
-        return f"{self.BASE_STYLE}\n{self.EXTRA_STYLE}"
+        return self.BASE_STYLE + self.EXTRA_STYLE
 
     def render(self) -> str:
         self._head()