My template is all messed up & then ...

I have not a clue what happened to my sidebar. I checked several times, all the html is as it should be as it was, for I copy & pasted the original & saved before touching it, Yet when save the sidebar is MIA from the side rather it gone "Down Under" haaha what the ? I compare it to one with the regular look, normal if you will.. yet tis still discombobulated. sigh... Now this morning after viewing blog once, posting this image below, saving tis back to normal ha haa I don't know how, I shan't look a gift horse in the mouth !