Minnow Sidebar problem

Hi,

I have done some changes to my Minnow theme, the biggest one being that I managed to have my sidebar visible all the time.
However, now it´s altered the format of my site: there´s the sidebar, a huge space, and then, my posts:
http://www.tearnwear.com

Do you know how can I remove this huge space between my sidebar and the beginning of my posts? I tried to change the header, the width of my posts, etc, but don´t know what the problem is… It´s driving me crazy! Can anyone please help me?

Thanks!