nav bar updated

Author: Randy1005

_pages/cv.md

@@ -5,7 +5,7 @@ title: cv
 nav: true
 nav_order: 5
 cv_pdf: cv.pdf # you can also use external links here
-description: This is a description of the page. You can modify it in '_pages/cv.md'. You can also change or remove the top pdf download button.
+description:
 toc:
   sidebar: left
 ---

_pages/teaching.md

@@ -3,7 +3,7 @@ layout: page
 permalink: /teaching/
 title: teaching
 description: Materials for courses you taught. Replace this text with your description.
-nav: true
+nav: false
 nav_order: 6
 ---