CSS Border Radius make an image round

I have a page that has three images across,  I am trying to make the images all round with a border-radius of 50%.  However, due to the size of the boxes they keep coming out oblong.  I need to keep it responsive. They are three images that are titeled INNOVATION in the middle of the page:
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Alexandre SimõesManager / Technology SpecialistCommented:
That happens because the image itself is not squared.
Forcing the image to be squared kind of fixes the issue:
.discover-box .image img {
    border: none;
    border-radius: 50%;
    width: 255px;
    height: 255px;

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But this also distorts the image.

The better option is to make sure the images are square or round the corners of a parent div and keep the image centered.

Here's an example of the latest: http://jsfiddle.net/AlexCode/rzfxoc62/

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Marco GasiFreelancerCommented:
You can just set the image as background of .image class and give to the img element inside display: none:

.discover-box .image {
  background: #fff url("../images/site_images/innovation.jpg") no-repeat scroll center center;
  border-radius: 50%;
  height: 255px;
  margin: 20px auto;
  overflow: hidden;
  width: 255px;

.discover-box .image img {
  display: none;

Open in new window

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