I noticed that css border-bottom property does not work in Chrome.

So far I've checked on IE 10 and Mozilla. Works fine on these browsers. It works on Chrome when I'm not using full screen though.

```
#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;
}

```