如何缩放一行图像以适合容器宽度？

I want to display a grid of images that will scale automatically to fit the available width. The number of images per row is arbitrary and the available width can vary as the user re-sizes the window. The original images also may be of different widths but need to be displayed with the same width each. I'd prefer to avoid tables and need a I want to display a grid of images that will sc