In this tutorial you will learn how to create a glass button using simple shapes, pathfinder box, clipping and opacity masks, and Blending Modes. You will also learn how to optimize your vector work as a web graphic and how to quickly replace the colors of the required elements. Step 1 Take the Rectangle Tool (M) and create a square with a blue filling (C = 25, M = 2, Y = 0 and K = 0)