CSS

Founder's Letter

Envelope opening animation using CSS animations for founder's letter.

Overview

An envelope opening sequence for a founder's letter. The interaction should feel tactile without relying on heavy JavaScript animation.

Approach

CSS keyframes drive the flap rotation and paper reveal. Layered transforms keep the motion smooth on lower-end devices.

Timing curves were tuned so the reveal feels deliberate rather than snappy.

Tech stack

CSS Animations/
HTML/

Notes

The craft prioritizes progressive enhancement: the letter content remains readable even when motion is reduced.