Slick Slider Next Arrows not showing

I'm trying to get the next and previous arrows to show up next to the product slider, just like in the Slick Slider example. But my sample doesn't seem to load the appropriate fonts to make that happen.

Here is my code:

HTML

<div class="slider">
    <div>
        <img src="http://www.onguardapparel.com/images/products/thumb/8013LN_Cat.jpg" height="100" width="100">
    </div>
    <div>
        <img src="http://www.onguardapparel.com/images/products/thumb/HiddenTailor.9074B.jpg" height="100" width="100">
    </div>
    <div>
        <img src="http://www.onguardapparel.com/images/products/thumb/1600ETY.JPG" height="100" width="100">
    </div>
    <div>
        <img src="http://www.onguardapparel.com/images/products/thumb/VIPERPRO81.jpg" height="100" width="100">
    </div>
    <div>
        <img src="http://www.onguardapparel.com/images/products/thumb/garment_bag.jpg" height="100" width="100">
    </div>
    <div>
        <img src="http://www.onguardapparel.com/images/products/thumb/1077.jpg" height="100" width="100">
    </div>
</div>

CSS

body{
    background-color: #fff;
}
.slider{
    margin: 60px auto;
    width: 500px;
}
div{
    height: 100%;
}
p{
    text-align: center;
    font-size: 12px;
    color: white;
}

JavaScript

$(document).ready(function(){
    $('.slider').slick({
        centerMode: true,
        centerPadding: '60px',
        dots: false,
        infinite: true,
        speed: 300,
        slidesToShow: 4,
        slidesToScroll: 1,
        arrows: true
     });
});

DEMO: http://jsfiddle.net/schwany23/j39j568c/

In your fiddle, you had forgotten to add the slick-theme.css file as an external resource. If you wanted to follow the default styling of the author, you need that file. Or if you want your own styling then please go ahead and make your own styling and make it youw own theme .css file or something.

<link rel="stylesheet" type="text/css" href="http://kenwheeler.github.io/slick/slick/slick-theme.css"/>

and this css for visibility,

.slick-prev:before, .slick-next:before{
    color:red;
}

The updted jsFiddle can be found here.

Code snippet here...

$(document).ready(function() {
  $('.slider').slick({
    centerMode: true,
    centerPadding: '60px',
    dots: true,
    /* Just changed this to get the bottom dots navigation */
    infinite: true,
    speed: 300,
    slidesToShow: 4,
    slidesToScroll: 1,
    arrows: true
  });
});

body {
        background-color: #fff;
      }
      .slider {
        margin: 60px auto;
        width: 500px;
      }
      div {
        height: 100%;
      }
      p {
        text-align: center;
        font-size: 12px;
        color: white;
      }
      /* added the following to give the background color of the arrows as red for visibility, the default which can be found in the slick-theme.css was white */
      .slick-prev:before,
      .slick-next:before {
        color: red;
      }

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script><script src="http://kenwheeler.github.io/slick/slick/slick.js"></script>
<link href="http://kenwheeler.github.io/slick/slick/slick.css" rel="stylesheet"/>
<link href="http://kenwheeler.github.io/slick/slick/slick-theme.css" rel="stylesheet"/>

<div class="slider">
  <div>
    <img src="http://www.onguardapparel.com/images/products/thumb/8013LN_Cat.jpg" height="100" width="100" />
  </div>
  <div>
    <img src="http://www.onguardapparel.com/images/products/thumb/HiddenTailor.9074B.jpg" height="100" width="100" />
  </div>
  <div>
    <img src="http://www.onguardapparel.com/images/products/thumb/1600ETY.JPG" height="100" width="100" />
  </div>
  <div>
    <img src="http://www.onguardapparel.com/images/products/thumb/VIPERPRO81.jpg" height="100" width="100" />
  </div>
  <div>
    <img src="http://www.onguardapparel.com/images/products/thumb/garment_bag.jpg" height="100" width="100" />
  </div>
  <div>
    <img src="http://www.onguardapparel.com/images/products/thumb/1077.jpg" height="100" width="100" />
  </div>
</div>

Hope this helps