Add new line after some text

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Today I face a problem related with editing in css file. I downloaded one css file but when I open it in my fedora 11, I find that all code are written in an single line.
Its very difficult to understand that code. First i try to format it manually, but then I decide to find some script or use replace feature of my favourite vi editor. After 5 minute struggle I found the solution, here it is-

sample css code:-
================================================
BODY{background-color:#70a5cc;font-family:verdana, arial, helvetica,sans-erif;font-size:10pt;color:#333;margin:0 0 10px}ul{margin-left:25px}dl{margin-top:0;padding-left:1px}dt{margin-top:.5em;color:#009;font-weight:700}
================================================
Note: all are in single line

Step 1: open file in vi editor.

Step 2: In command mode type:
a) :%s/{/{\r /gi
explanation:- above line break the line after every '{' tag and give two space in new line.
syntax:- :%s///gi
b) :%s/;/;\r /gi
explanation:- same as above but break the line after every ';' tag
c) :%s/}/\r}\r\r/gi
explanation:- break the line before every '}' tag and break the line two times after '}' tag.


File after editting:-
==========================================================================
BODY{
background-color:#70a5cc;
font-family:verdana, arial, helvetica,sans-erif;
font-size:10pt;
color:#333;
margin:0 0 10px
}

ul{
margin-left:25px
}

dl{
margin-top:0;
padding-left:1px
}

dt{
margin-top:.5em;
color:#009;
font-weight:700

}

==========================================================================

In actual file, i format 1 line into 700 lines :)


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