Safari appears to be ignoring CSS

I'm doing some changes to a wordpress theme, but Safari (both on Mac and iOS) seems to be ignoring some of the CSS, whereas other browsers work fine.

An example - this is how it looks in Chrome and Safari: http://ift.tt/1zxI9Qq

This is the CSS I've used, specifically for the images.

.homeleftside1 img {
width: 70px;
height: auto;
margin-right: 15px;
float: left;
border-radius: 100%;
 }

I've got a test site here so you can see what I mean: http://46.101.9.172

Any ideas where I am going wrong? Thanks