fix example

willmcgugan · willmcgugan · commit eed7a94edac0 · 2023-11-29T10:18:36.000Z
diff --git a/docs/examples/styles/keyline.tcss b/docs/examples/styles/keyline.tcss
@@ -7,7 +7,7 @@ Grid {
 Placeholder {
     height: 1fr;      
 }
-hidden {
+.hidden {
     visibility: hidden;
 } 
 #foo {
