Great news — we have the banners!
Starting today, our cover pages will have a banner of fluid size (image 1250 X 350 pixels, max-size 2mb) to cast the book online.
Here’s how it looks for our official handbook, for example.
Banner will cover the entire width of the screen (i.e. background-size: cover;) responsively and pretty much scale itself. And because the banner image is rendered via css, it is also lazily loaded without affecting the roll out of content. We think that is awesome!
Needless to mention here, it is recommended to try and optimize all your images for web performance, especially the banners.
Ship only the pixels you’re going to need.
Banner credit: Wikipedia