you should be posting in the Themes and Templates section – but this sort of thing is theme specific, so nobody can say “click here and do this” without knowing some information about which theme you’re using – provide links, help people help you.
Changing the design of your blog isn’t for everyone – you should be trying to teach yourself some template editing instead of demanding support in the wrong place. Imagine if people walked into a university and said IF THIS PLACE IS HERE TO TEACH THEN TEACH ME TO DRIVE A CAR!!!
A little self-learning is expected.