From [[https://css-tricks.com/seamless-responsive-photo-grid/|CSS Tricks]]\\
To create a random size-assortment of pics, this will place it within a section called ''photos''\\
<code>
function getRandomSize(min, max) {
  return Math.round(Math.random() * (max - min) + min);
}

for (var i = 0; i < 25; i++) {
  var width = getRandomSize(200, 400);
  var height =  getRandomSize(200, 400);
  $('#photos').append('<img src="//www.lorempixel.com/'+width+'/'+height+'/cats" alt="pretty kitty">');
}
</code>

Put a 
<code>
<section id="photos"></section>
</code>

and this will be populated