Migrating from Blogger

Hi
I hope I’m asking this question in the right forum.
Does anyone have any experience with migrating over from Blogger?
In a month or so I will be migrating my Blogger content over to WP and am just curious in what form the posts will be be transferred?
The main reason I am trying to find out is because I have quite a bit of formatting coded into my actual posts (i.e such as text/image aligment, text colours etc.).
Will WordPress strip this formatting somehow so once migrated my old posts will gel with my new design?
I’m kinda dreading having to edit all my old posts in order to create a uniform look with my new WP design.
Anyone have any idea how it all works?
Cheers