BLOGGER/blogspot help

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This is driving me CRAZY. I GOT A WEBSITE ON BLOGGER AND I ADDED a widget and I ended up adding it twice, and it looks really stupid and I would like to know how do I remove it? I tried to pretend I was adding it again , hoping to see an option of delete or remove but there is none! I still want the widget but I don't like it because its too big it blocks my words in my post also is there away to manually edit the width or height of a widget? PLEASE I NEED YOUR HELP please help me