misalignment of images and css styling disappears when minify enabled

Hi

I am using the latest version of the plugin.

my site is happydebt.co.uk

When i enable minify the css styling goes bad and the images are misaligned.

Tried lots of things but no joy.

when i disable minify only but leave the plugin enabled all is ok. I need to enable minify to improve performance.

can anybody help me

thanks

Mac