## `sizes` example for multi-column image layout

    <img src="images/earth.t.jpg" alt=""
      	srcset="images/earth/earth-200.jpg 200w,
      	images/earth/earth-250.jpg 250w,
      	images/earth/earth-300.jpg 300w,
      	images/earth/earth-350.jpg 350w,
      	images/earth/earth-400.jpg 400w,
      	images/earth/earth-450.jpg 450w,
      	images/earth/earth-500.jpg 500w,
      	images/earth/earth-550.jpg 550w,
      	images/earth/earth-600.jpg 600w,
      	images/earth/earth-650.jpg 650w,
      	images/earth/earth-700.jpg 700w,
      	images/earth/earth-750.jpg 750w,
      	images/earth/earth-800.jpg 800w,
      	images/earth/earth-900.jpg 900w,
      	images/earth/earth-1000.jpg 1000w"
      	sizes="(max-width: 750px) 100vw,
      		   (max-width: 1090px) 50vw,
      		   (max-width: 1425px) 33vw,
      		   25vw"
      	/>