Customizing RSS Feed in my Website

I used the following link to the RSS Feed in my website: http://net.tutsplus.com/articles/news/how-to-build-a-super-duper-news-scroller/

Actually, this link is very nice. But my problem with customizing the RSS Feed size to fit it properly with my website. I want to get RSS from http://www.ted.com/ I added the following link as a source for RSS Feed:

 $feed = new SimplePie('http://feeds.feedburner.com/TEDTalks_video'); 

I did everything right, but the problem with me now is when I modified the CSS file to the following:

 #widget {
overflow: hidden;
background: #e3e3e3;
padding: 1em;
border: 1px solid #c5c5c5;
height: 300px; /* You should adjust this height for your project. */
width: 300px;
position: relative;
float: left;
min-width: 210px;
-moz-border-radius-bottomright: 10px;
}

I could not be able to get t开发者_Go百科he images and titles completely from the RSS source. I don't way, so please help me.

Customize with Submit RSS , http://www.submit-rss.com/download.html :)