Brief - feed reading extension for Firefox

Hi there folks.  I love Brief, as it makes keeping an eye on blogs, flickr accounts, and photographers an amazing breeze.   As you can guess, I subscribe to image-based feeds only.  I don't care much for the articles or captions that go with them, as I can always ctrl-click away and spawn as many windows as I need to read further.
 
So while the default CSS is fine and dandy, I wanted something that would present the images to me more like a gallery, and thus spawned Darkroom.  I don't know jack about CSS, so this is what I managed to butcher up after a few minutes of tinkering with the CSS and the F5 key in the browser.
 
Screenshot:  http://img36.imageshack.us/img36/2578/searchtest.jpg
 
As you can see from this Pixar feed, it's just a large jumble of all the article pictures.  Great!  Perfect for me!   However, it's heavily flawed.   I could definitely use expertiese from someone more experienced in CSS to help iron out some bugs.
 
A few glaring issues I can see off the bat so far are:
1) Things are just a jumble right now.  I couldn't quite figure out how to get everything to conform to a more grid-like setup.
2) Ctrl-clicking on an image results in scrollbars around it.  Hm. How to shut those off or pad things out oh-so slightly....
3) Headline mode is completely broken.  Fine by me, I didn't use it. ;)
 
Anyway, here's my CSS for those that care to use it.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 
 
/*  DarkRoom Theme v1.0 by Rabbit */

body {
  margin: 0;
  padding: 0;
  background: #333
}

/* ----------------------  Header ---------------------- */

#header {
  display:none;
  }

#feed-content {
  margin: 0px 0 0;
  padding: 0 0px 0px;
  }

 
/* ---------------------------  Article  ------------------------ */

.article-container {
 background: #333;
  border: 0px #333;
  position: relative;
  width: auto;
  height: auto;
  float: left;
  }

/* ----------------------  Article header  ---------------------- */

.article-header {
display:none;
}

/* ----------------------  Article content area   ---------------------- */

.article-content {
  font-size: 0px;
  padding: 0 0px 0px;
  //overflow: auto;
  align:left;
  border-color: #333;
}

.article-content a {
  color: #111;
  }

.article-content a:visited {
  color: #111;
  }

/*  ----------------------  Adjustments for read articles  ---------------------- */

.article-container[read] {
  background: #333
  border-color: #333;
  }

/* ----------------------  Adjustments for the selected articles  -------------------- */

.article-container[selected] {
  border-color: #333;
 }

.article-container[selected] + .article-container {
  border-color: #333;
}

.article-container[selected]:last-child {
  border-bottom: 0px solid #333;
}