In the previous chapter, we constructed the blog markup from the header section to the footer section using HTML5 elements. The blog, however, is currently faceless. If you opened the blog in a browser, you will just see it bare; we have not yet written the styles that add up to its appearance.

Throughout the course of this chapter, we will focus on decorating the blog with CSS and JavaScript. We will be using CSS3 to add the blog styles. CSS3 brings a number of new CSS properties, such as border-radius, box-shadow, and box-sizing, that allow us to decorate websites without the need to add images and extra markup.

However, the CSS properties, as mentioned previously, are applicable only within the latest browser versions. Internet Explorer 6 to 8 are not able to recognize those CSS properties, and won't be able to output the result in the browsers. So, as an addition, we will also utilize a number of polyfills to make our blog presentable in the...