<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<section id="description">
<div class="container">
<div class="row">
<div class="col-md-7 ">
<div id="carousel-custom" class="carousel slide left_img" data-ride="carousel">
<div class="row">
<div class="col-md-3">
<ol class="carousel-indicators mCustomScrollbar meartlab">
<li data-target="#carousel-custom" data-slide-to="0" class="active"> <img data-image="yellow" src="https://picsum.photos/600/700/?random" alt="" /> <img class="current" data-image="white" src="https://picsum.photos/600/706/?random" alt="" /> <img data-image="black" src="https://picsum.photos/600/703/?random" alt="" /> </li>
<li data-target="#carousel-custom" data-slide-to="1"> <img data-image="black" src="https://picsum.photos/600/704/?random" alt="" /> <img data-image="white" src="https://picsum.photos/600/707/?random" alt="" /> <img data-image="yellow" src="https://picsum.photos/600/701/?random" alt="" /> </li>
<li data-target="#carousel-custom" data-slide-to="2"> <img data-image="black" src="https://picsum.photos/600/705/?random" alt="" /> <img data-image="yellow" src="https://picsum.photos/600/702/?random" alt="" /> <img data-image="white" src="https://picsum.photos/600/708/?random" alt="" /> </li>
</ol>
</div>
<div class="col-md-9">
<div class="carousel-outer">
<div class="carousel-inner ">
<div class="item active"> <img data-image="yellow" src="https://picsum.photos/600/700/?random" alt="" /> <img class="current" data-image="white" src="https://picsum.photos/600/706/?random" alt="" /> <img data-image="black" src="https://picsum.photos/600/703/?random" alt="" /> </div>
<div class="item" > <img data-image="black" src="https://picsum.photos/600/704/?random" alt="" /> <img data-image="white" src="https://picsum.photos/600/707/?random" alt="" /> <img data-image="yellow" src="https://picsum.photos/600/701/?random" alt="" /> </div>
<div class="item" > <img data-image="black" src="https://picsum.photos/600/705/?random" alt="" /> <img data-image="white" src="https://picsum.photos/600/708/?random" alt="" /> <img data-image="yellow" src="https://picsum.photos/600/702/?random" alt="" /> </div>
</div>
<a class="left carousel-control" href="#carousel-custom" data-slide="prev"> <span class="glyphicon glyphicon-chevron-left"></span> </a> <a class="right carousel-control" href="#carousel-custom" data-slide="next"> <span class="glyphicon glyphicon-chevron-right"></span> </a> </div>
</div>
</div>
</div>
</div>
<div class="col-md-5">