Replace statics with labels.

docs/examples/styles/border.css

@@ -1,24 +1,25 @@
 Screen {
     background: white;
 }
-Screen > Static {
+Screen > Label {
+    width: 100%;
     height: 5;
     content-align: center middle;
     color: white;
     margin: 1;
     box-sizing: border-box;
 }    
-#static1 {
+#label1 {
     background: red 20%;
     color: red;
     border: solid red;
 }
-#static2 {
+#label2 {
     background: green 20%;
     color: green;
     border: dashed green;
 }
-#static3 {
+#label3 {
     background: blue 20%;
     color: blue;
     border: tall blue;

docs/examples/styles/border.py

@@ -1,12 +1,12 @@
 from textual.app import App
-from textual.widgets import Static
+from textual.widgets import Label
 
 
 class BorderApp(App):
     def compose(self):
-        yield Static("My border is solid red", id="static1")
-        yield Static("My border is dashed green", id="static2")
-        yield Static("My border is tall blue", id="static3")
+        yield Label("My border is solid red", id="label1")
+        yield Label("My border is dashed green", id="label2")
+        yield Label("My border is tall blue", id="label3")
 
 
 app = BorderApp(css_path="border.css")