Animated Gradient Border in Flutter Custom Painting: Draw Gradient Border in Flutter Medium article: Part 1: https://medium.com/@islamdidarmd/custom-painting-draw-gradient-border-in-flutter-part-1-c2b2b147a14f Part 2: https://islamdidarmd.medium.com/custom-painting-draw-gradient-border-in-flutter-part-2-e8a3b5555513 Preview