Bug report

Bug summary
The online example to demonstrate use of the 'markevery' attribute at https://matplotlib.org/examples/pylab_examples/markevery_demo.html has an ugly overlap between the rows of the GridSpec for figure 1, reproducible both online via Firefox 53.0.2, and from a fresh 2.0.2 mpl build. The fix requires a trivial readjust of the hspace for the first GridSpec, and will be completed momentarily.

Code for reproduction

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Actual outcome

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Expected outcome

Matplotlib version

• Operating System: Ubuntu 14.04
• Matplotlib Version: 2.0.2
• Python Version:
• Jupyter Version (if applicable):
• Other Libraries: