Having trouble with a codecademy course on CSS

The first part of the lesson. Using the "class" attribute to change the color of a whole short paragraph is easy enough, but I'm having trouble with the second task. Which is instructing I only change part of a paragraph.

Here's the link to the lesson: http://www.codecademy.com/courses/css-coding-with-style/2#!/exercises/1

to only change part of the paragraph, you would use the span tag around the part of the paragraph you want to change. [along with your class="blue" inside the span tag]

Thanks I ended up working it out