how i give every label different icon

hello my friends i add css to my blogger to do icon in labels but the problem now is that all my labels see the same how i give every label different icon?

this is my blog and my problem (left side)

http://didyouknowblogger.blogspot.com

 

Add an id to each label, and attach each icon to the corresponding id.

 

thanx bro but how i do it? i don't know can you explain me ?

 

General explanaition:
<p id="first">This is a paragraph with some text</p>
<p id="second">This is another paragraph</p>
<p id="third">And this is the last paragraph</p>

That would be an example of elements with IDs assigned.
Then you go to your CSS, and do something like this:
#first {
//icon for first element goes here
}
#second {
//icon for second element goes here
}
#third {
//icon for third element goes here
}