Meet Amber,a theme for Tumblr.
Amber pairs a graceful, minimal design with a surprisingly substantial set of features. Its device-agnostic design approach ensures that your content will observe and function properly on a range of devices: from desktop to mobile. It’s exquisitely well suited for both longer copy and quickly sharing what you love. For the content creators and the sharers alike. Below is a list. Because why not? Easy sharing of your content
Responsive, or device agnostic design
Support for tall-resolution (retina) screens
By the way,its available here!
Source: tumblr.com