This example demonstrates basic SVG shape drawing with D3, showing circles, rectangles, lines, and paths arranged to form a playful smiley composition. The code uses plain D3 selections to append SVG elements inside a `<g>` container with a scale transform, while CSS classes like `.lines` style the stroke properties. A video tutorial link accompanies the code, which uses D3 v3 to manipulate SVG attributes directly without data binding or advanced visualization techniques.