alignment issue with inline-blocks of different heights

I'm trying to get the blocks pictured here to align with each other, but if they are different heights, for some reason开发者_如何学Python the shorter div aligns to the bottom of the container div. Neither div has any sort of padding or margin that would cause this behavior. What do I need to do to get them to align to the top of the div?

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vertical-align:top on the elements that you want to be vertically aligned (not on the parent), as they are display:inline-block.