Creating CSS layouts can be a real time consuming task especially when designs become more complex and need to be lean and compatible increases by the day. These days there could be many devices accessing your website and blog, and not just PCs and laptops.
Whenever you start a new project there is no need to create your CSS definitions from scratch. From the very first project you can start creating a framework for your grids, typography, forms etc. and you can use that framework and do basic modifications whenever you start a new project. Similarly you can use the CSS resets to make your layouts compatible to all major browsers and devices. You can go and read CSS Frameworks + CSS Reset: Design From Scratch at Smashing Magazine.
