html - How to fill div with image -

i have responzive grid , dont know hot remove space between top , bottom of div. how fill image whole div? can see here https://jsfiddle.net/jo3jorch/1/

<div> <img src="http://beyondeurope.net/wp-content/uploads/2014/08/top_10_universities_in_new_york_city.jpg"> </div>  div {    width: 50%;    float: left;  } div img {    width: 100%;  } 

here go

https://jsfiddle.net/b7nxzt8m/1/

this missing

img {     display:block; }