Align objects vertically with the Vertical Alignment 
tools.
Align Top 
aligns all selected objects with the top edge of the highest object.
Shortcut
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Keys: Alt, D, AL, V, T
Align Middle 
centers all selected objects vertically relative to each other.
Shortcut
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Keys: Alt, D, AL, V, M
Align Bottom 
aligns all selected objects with the bottom edge of the lowest object.
Shortcut
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Keys: Alt, D, AL, V, B
Distribute Vertically 
aligns all selected objects to be equally spaced vertically.
Shortcut
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Keys: Alt, D, AL, V, D