#!/usr/bin/env python

maxSize = 8000

for dim in ["width", "height", "device-width", "device-height"]:
  for i in range(maxSize):
    print("""@media ({1}: {0}px) {{ #{1} {{ background-image: url("https://dummyimage.com/50x30/fff/000&text={0}&dim={1}"); }} }}""".format(i, dim))