
A grid of twelve circular prohibition signs arranged in a 3x4 layout on a pale gray background, each featuring a bold red circle with a diagonal red slash and a black vector-style pictogram. The first row includes a handgun, lit match with splinters, knife, and stylized explosives; the second shows a skull-and-crossbones bottle, sparking electrical connection, compressed gas cylinder, and spray paint can; the third displays a flammable liquid container, burning flask, crossed wrench and screwdriver, and an acid-labeled bottle. All symbols are flat, clean-lined, and sans shading, rendered in a sharp digital vector style with no texture or shadows. Lighting is flat and even, using only red, black, and gray for maximum clarity and universal recognition, evoking utilitarian safety signage aesthetics.