A fork of Charu’s 3D circles example, this visualization renders seven translucent circles of varying sizes and neon colors on a fixed full-screen SVG canvas with a light green background. Each circle is positioned by explicit x, y, and radius data within the code, using D3 v7’s selection and join pattern. The circles are drawn with the `.attr()` method, and their opacity is set to 0.7, creating a layered, semi-transparent effect.