Clarify the purpose of CSS class .in to .fade

diff --git a/docs/components/navs.md b/docs/components/navs.md
index 564564f5250db56cfd8e88f1d18a52dcdd9b0455..6b2e707ff707d86b2cfb4b73a4e10029767a51ad 100644 (file)
--- a/docs/components/navs.md
+++ b/docs/components/navs.md
@@ -258,7 +258,7 @@ $('#myTab li:eq(2) a').tab('show') // Select third tab (0-indexed)
 
 ### Fade effect
 
-To make tabs fade in, add `.fade` to each `.tab-pane`. The first tab pane must also have `.in` to properly fade in initial content.
+To make tabs fade in, add `.fade` to each `.tab-pane`. The first tab pane must also have `.in` to make the initial content visible.
 
 {% highlight html %}
 <div class="tab-content">