The most wonderful things about WordPress are its community and the themes. The verity of beautiful themes could seduce us to change every now and then. However, the basic rule is to choose the simplest theme that is suitable for our needs.
Twenty Twelve
A neat CSS customizing for WordPress
In case you’re interested, here is the CSS customizing for Twenty Twelve Template that is used on this WordPress site. I suppose that you’re familiar with CSS & Inspecting Elements on browsers. Please note that additional customization might be needed. For example, optimized ads (WordAds), Tablet & Mobile view, …