title: place top x-axis label on the inside of the graph
body: <p>I have a graph with two x axis label, top and bottom. The top label is running into the title of the graph. Is there anyway to put labels on the inside of the graph? I don't see it in the documentation.</p>
  
  <p>The alternative is to use a raised title, but I can't do that because my graphs are stacked. The raised title from graph below will get mixed up with the graph above it:</p>
  
  <p><a href="https://stackoverflow.com/questions/12750355/python-matplotlib-figure-title-overlaps-axes-label-when-using-twiny">Python Matplotlib figure title overlaps axes label when using twiny</a></p>