Customizing Gallery Boxes

CENTERING IMAGES IN GALLERY BOXES

div.item
img 
{
display: block;
margin: 0 auto;
}

MAKING THE CAROUSEL BOX ARROWS BIGGER
(Note: using percentage values, large ones (e.g., 500%) seems to 
be the best way to increase the arrow size.)

a.carousel-control
{
color:#nnnnnn;
font-size:nnn%;
}

CHANGING THE THE CAROUSEL CAPTION
This code inserts an image background, centers the caption text,
and changes the caption font color.

div.carousel-caption
{
background-image: url('url goes here'); 
text-align:center; 
color:#nnnnnn;
}