Error with www.xyz.com vs just xyz.com

Hello,
I am getting a strange error. I know it is something small but just can't figure out. I created a template and it looks fine when I go to

sweetiecutie.se

But when I go to

www.sweetiecutie.se

the header is all wrong. The logos in the header links disappear and also the menu doesn't pick up the fonts.

Could anyone be kind enough to point me in the right direction?

Thank you!
Vimal.

you will have to redirect traffic from www.xyz.com to xyz.com or vice versa, depending on how you configured your opencart installation.