Style Default Gallery CSS

I’m using justin’s cleaner wordpress gallery plugin and the mycss plugin so I can have easy access to the default wordpress css.

what i’d like to do is have gallery images vertically aligned to the bottom. by default they align to the top.

im not sure which container element to modify. When I looked in firebug there’s even another reference to a .gallery-icon

.gallery {
display: block;
clear: both;
overflow: hidden;
margin: 0 auto;
}
.gallery .gallery-row {
display:block;
clear: both;
overflow: hidden;
margin: 0;
}
.gallery .gallery-item {
overflow: hidden;
float: left;
margin: 0;
text-align: center;
list-style: none;
padding: 0;
position: absolute
bottom: 0
}
.gallery .gallery-item img, .gallery .gallery-item img.thumbnail {
max-width: 89%;
height: auto;
padding: 1%;
margin: 0 auto;
}
.gallery-caption {
margin-left: 0;
}

thank you