title: Table of contents in Jupyter notebooks on GitHub
body: <p>I use HTML anchors in my Jupyter notebooks to provide internal links such as those used in a table of contents and "Return to Top"s. This works very well on my computer. However when I upload my notebooks to GitHub the invisible anchors become visible and links can no longer work. How to solve this problem?</p>
  
  <p>Here are some notebooks on GitHub that have this problem:</p>
  
  <p><a href="https://github.com/mathyingzhou/linear_algebra_demos/blob/master/01-LinearSystems/Solving%20linear%20systems.ipynb" rel="noreferrer">https://github.com/mathyingzhou/linear_algebra_demos/blob/master/01-LinearSystems/Solving%20linear%20systems.ipynb</a></p>
  
  <p><a href="https://github.com/mathyingzhou/boston-crime/blob/master/Boston%20Crime.ipynb" rel="noreferrer">https://github.com/mathyingzhou/boston-crime/blob/master/Boston%20Crime.ipynb</a></p>