You need to modify the main style.css for more functionality. I found I had to add a section in my style.css to get more control over the images. e.g.
.da-slide .da-img img
{ blah blah blah
}Because this allowed me to actually resize and move the image, whereas the .da-slide .da-img did not. Another thing I found in my template was that the a tag in the theme CSS would modify my website's CSS for some reason, so I removed it from there, and put it into the main style.css files as this for example:
.da-slide a{
color: #fff;
}