JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<div class="row-eq-height">
<div class="col-xs-4 col-md-4">
    <div class="thumbnail">
      <img src="img/seo.png" height="150" width="150">
      <div class="caption">
        <h4 class="text-center">SEO Services</h4><hr class="style-one">
        <h4 class="text-center">We provide you with SEO Services ,which will boost your site ranking on different search engine, Google,Yahoo,etc.</h4>
        <div class="text-right">
        <a href="#" class="btn btn-primary" >25$</a>
      </div>
      </div>
    </div>
      
    </div>


    <div class="col-xs-4 col-md-4 ">
    <div class="thumbnail">
      <img src="img/s2.png" height="150" width="150">
      <div class="caption">
        <h4 class="text-center">Websiite Templates</h4><hr class="style-one">
        <h4 class="text-center">Here we provide you with various different website templates,responsive, mobile interface enabled. as per your requirement.</h4> 
      </div>
    </div>
      
    </div>


    <div class="col-xs-4 col-md-4">
    <div class="thumbnail">
      <img src="img/s3.png" height="150" width="150">
      <div class="caption">
        <h4 class="text-center">hello</h4><hr class="style-on
        <h4></h4>
      </div>
    </div>
      
    </div>
</div>

CSS

.row-eq-height .col-xs-4 .thumbnail{
  min-height : 300px;
}

.row-eq-height .col-md-4 .thumbnail{
  min-height : 300px;
}