[Plugin: Mini twitter feed] Reduce the size – change to style

Firstly, many thanks for this ts super!

I am a novice to html, css and the like and I have uploaded minitwitter to my site but its suppose to rest next the main image on the home page but it is too wide. Ive tried but failed and cant reduce the size so it sits like a column. It so bad that I can only diplay one tweet becasue if i display more those tweets go under the image.

Please help!

https://www.ads-software.com/extend/plugins/mini-twitter-feed/