Customer account page disorganised - Dawn theme

[MagdalenaBB]

Hey dear community! 

When a customer logs in to my website, the content looks disorganized, as shown in the picture.

I would like it for all the elements to be justified (aligned to the center). Is there any way to do this? Thank you for your help! 
Website - maisonmagdalena.com
Password - MaisonMagdalena.222

[MagdalenaBB]

Hey! Thank you for your reply. 

Yes, on this screen it is fine but once the customer makes an account and logs in, it is a bit over the place (as seen in the screenshot I provided). Do you have any suggestions?