Thanks to @carolyn’s help with JavaScript and other dumb questions I’ve updated the vis with gender now being selectable in the line graph. Thank you once again for all the help.
Also, I’ve learned that sizing_mode="stretch_both" made this display differently based on the size and resolution of your monitor, and while it looked great on mine it didn’t on others, and I now understand the difference between px and pt font sizes… How embarrassing. I’ve tweaked it so it hopefully displays a little better on smaller and low resolution monitors that scale by 125% on default.