The Twenty Twelve is the default theme for WordPress in 2012.

Quick Specs (all measurements in pixels)

1. The main column width is 625 except in the full-width layout where it’s 960; sidebar width is 250.
2. Featured image width is 624 (height is flexible)—these images are displayed on displayed on “standard” posts; posts without a specific format such as image, aside, link, or quote.
3. The suggested header image dimensions are 960 by 250 (width, height). However, both are flexible so you can upload a smaller cropped image if you wish. The width is limited to 2000.

There are a few ways that you can customize Twenty Twelve, either from the WordPress' Customizer or through the WordPress admin screen. This short guide will show you how to do so using the Customizer:

[under construction]

Links

• Twenty Twelve Demo and Download
• Twenty Twelve Changelog