I have observed that the css border-bottom property is not functioning properly in Chrome.
Upon testing in IE 10 and Mozilla, I found that it works fine on these browsers. However, it only works in Chrome when the full screen mode is not being utilized.
#sync2 .item{
background: transparent;
color: #fff;
text-align: center;
cursor: pointer;
width:25%;
margin-right:auto;
margin-left:auto;
border-bottom:1px solid white;
transition:1s;
-moz-transition:1s;
-webkit-transition:1s;
}