I recently included the option to add a large cover image, like the one above, to my posts. The source image is cropped, and below specific maximum dimensions it’s displayed at a predetermined aspect ratio. This post describes the implementation. Demo: Flexible CSS cover imagesKnown support: Chrome, Firefox, Safari, Opera, IE 9+ FeaturesThe way that the cover image scales, and changes aspect ratio
![Flexible CSS cover images – Nicolas Gallagher](https://cdn-ak-scissors.b.st-hatena.com/image/square/c7245446240a8f49c986a4e1a2ba76e9b0befd92/height=288;version=1;width=512/https%3A%2F%2Fnicolasgallagher.com%2Fflexible-css-cover-images%2Fcover.jpg)