Help me with my tumblr theme, moving the description.

so I'm having my blog for some months now and I wanted to try a new theme but I'm not a specialist so I can't move the description box from the top to the right. Can you help me, please? Here's my blog:
and here's my html-Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
     Theme: The Minimalist v1.
     Design: The Minimalist (<a href="" rel="nofollow"></a>)
<html xmlns="" xml:lang="en" lang="en">

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