Should I use block element or inline element? : I want to show like this.<br>

> [![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/s973o.png
What should i used?
Obviously one external div with blue background.<br>
But what inside?<br>
**Two span or<br>
Two p elements or<br>
Two div**<br>
This is just the case.<br>
I want generalise answer **how to structure page properly**.<br>
Please also refer some article or reference about it


