Depending on whether there is a description for a gallery or image, the alignment and spacing of images is wonky. How do I get this to look nicer?

Frontpage: If no description, then instead of...
title of gallery
------------------
|XXXXXXXXXXXXX|
|XXXX_image_XXX|
|XXXXXXXXXXXXX|
------------------
title of next gallery
------------------
|YYYYYYYYYYYYY|
|YYYY_image_YYY|
|YYYYYYYYYYYYY|
------------------

I see...
title of gallery
------------------
|XXXXXXXXXXXXX|
|XXXX_image_XXX|
|XXXXXXXXXXXXX|
------------------title of next gallery
------------------
|YYYYYYYYYYYYY|
|YYYY_image_YYY|
|YYYYYYYYYYYYY|
------------------

For gallery-list or gallery view: if there are varying lengths of descriptions then instead of...
------------------- ------------------- -------------------
|XXXXXXXXXXXXX| |YYYYYYYYYYYYY| |XXXXXXXXXXXXX|
|XXXX_image_XXX| |YYYY_image_YYY| |XXXX_image_XXX|
|XXXXXXXXXXXXX| |YYYYYYYYYYYYY| |XXXXXXXXXXXXX|
------------------- ------------------- -------------------
description 1......... description 2.......... description 3
..............................is longer............

I see...

------------------- |YYYYYYYYYYYYY| -------------------
|XXXXXXXXXXXXX| |YYYY_image_YYY| |XXXXXXXXXXXXX|
|XXXX_image_XXX| |YYYYYYYYYYYYY| |XXXX_image_XXX|
|XXXXXXXXXXXXX| ------------------- |XXXXXXXXXXXXX|
------------------- description 2......... ------------------
description 1......... is longer............... description 3