diff --git a/src/chap/commands/tui.css b/src/chap/commands/tui.css
index 8dbda82..32011f4 100644
--- a/src/chap/commands/tui.css
+++ b/src/chap/commands/tui.css
@@ -36,6 +36,9 @@ Markdown:focus-within {
 Markdown {
     border-left: heavy transparent;
 }
+MarkdownFence {
+    max-height: 9999;
+}
 Footer {
     dock: top;
 }