title: Include image in AMP with correct aspect ratio without knowing height/width
body: <p>Is there a way to include images in AMP without knowing it's width and height?<br>
  I have tried layout=responsive, but it stretches the image as per the given height and width instead of making it responsive.(Original image's aspect ratio is not maintain, instead the given height and width value's aspect ratio is maintained).<br>
  I have also tried layout=fill, It maintains aspect ratio but it creates padding if the given height/width is larger than original image's height/width.<br>
  If anybody can help me with this problem, as I don't know the dimension of image and want to load it with correct aspect ratio without padding.</p>