fix refresh

examples/basic.css

@@ -11,10 +11,14 @@ App > DockView {
   height: 1fr;
   layer: panels;
   border-right: outer #09312e;
-  offset-x: -50%;
+  offset-x: -100%;
   transition: offset-x 1.2s in_cubic 200ms, offset-y 1s linear;
 }
 
+#sidebar.-active {
+  offset-x: 0;
+}
+
 #header {
   text: on #173f5f;
   dock-group: header;

examples/basic.py

@@ -5,16 +5,17 @@ from textual.widget import Widget
 class BasicApp(App):
     """A basic app demonstrating CSS"""
 
-    def on_mount(self) -> None:
-        """Build layout here."""
+    def on_load(self):
+        self.bind("t", "toggle('#sidebar', '-active')")
 
-        self.view.mount(
+    def on_mount(self):
+        """Build layout here."""
+        self.mount(
             header=Widget(),
             content=Widget(),
             footer=Widget(),
             sidebar=Widget(),
         )
-        self.panic(self.query("#sidebar").first().styles)
 
 
-BasicApp.run(log="textual.log", css_file="basic.css")
+BasicApp.run(log="textual.log", css_file="basic.css", log_verbosity=3)