Background Color etc of Profile in posts

So here's what it currently looks like:



And here's what I want it to look like:
(please ignore the blue dirts behind the texts, I don't want them there, it's just hard to remove them when I edited the original image.)


The changes were:

• The profile on the left has a background color (light blue) which is different from the posts body's color (the one with hello world)
  
• The profile also has a mini box inside (with rounded corners).
  
• The profile contents is adjusted so it would be fit inside the mini box.
  

The codes I want to know:

• How to change the background color of the profile portion?
  
• How to put a mini box (rounded corners if possible, and with a different color too)?
  
• How to adjust the profile contents (avatar, rank, post counts, etc) xy position?
  

I'm using phpbb3

Add this in your css

Code:

 .postprofile {
    background-color: #ffffff;
    border: 1px solid #054f8d;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    border-radius: 5px;
}

Thanks. It made the profile section have a white minibox. But it didn't change the profile's main background color, and the profile contents is not on the center.

So I guess the only codes left for me to know:

• How to change the background color of the profile portion?
  
• How to put a mini box (rounded corners if possible, and with a different color too)?
  
• How to adjust the profile contents (avatar, rank, post counts, etc) xy position?
  

EDIT: Actually I don't think number one is possible. >.< At least the profile contents xy position code would be helpful x:

Link to your forum would help.

link removed.

I figured it out. Please lock as it is already solved. :D