What does z-index do? What does position do? What happens if you set position to absolute? Does it change? What happens if you make your browser window different sizes with position: relative vs. position: absolute?
So What Have We Done?
You should now have a round-cornered-square over your yellow circle around where an eye should go. Notice that border-radius is now set as 3px. See how it is not quite a perfect circle?
Now, Let's Add a Pupil!
Here, we will work with an id, where we have been working with classes exclusively. First, we need to add it to our html file:
And, now to the CSS file:
NOTE: in CSS, when you call classes, you reference it with a . (.lefteye); you reference ids with a # (#inner-left).
Great! Now We Have Our First Eye!
You should now see that your smiley face has an eye with a white pupil inside!