There seems to be some problems with the following code I downloaded from a free website template. Instead of showing my pictures, there is only white text on white background. I can only see the text if I mark it with the mouse. Is there something wrong with the code?
<!-- Start Banner -->
<div class="ulockd-home-slider">
<div class="container-fluid">
<div class="row">
<div class="pogoSlider" id="js-main-slider">
<div class="pogoSlider-slide" style="background-image:url(images/sladd_ur.jpg);">
<div class="container">
<div class="row">
<div class="col-md-12">
<div class="slide_text white_fonts">
<h3>Progress & Success<br><strong>Currency</strong></h3>
<br>
<a class="start_exchange_bt" href="exchange.html">Start Exchange ></a>
</div>
</div>
</div>
</div>
</div>
<div class="pogoSlider-slide" style="background-image:url(images/sladd_i.jpg);">
<div class="container">
<div class="row">
<div class="col-md-12">
<div class="slide_text white_fonts">
<h3>Progress & Success<br><strong>Currency</strong></h3>
<br>
<a class="start_exchange_bt" href="exchange.html">Start Exchange ></a>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- .pogoSlider -->
</div>
</div>
</div>
<!-- End Banner -->