<div class="row clearfix">
<div class="col-lg-6 col-md-6 col-sm-12 big-column">
<div class="form-group">[text* your-name placeholder "Your Name"]</div>
<div class="form-group">[email* your-email placeholder "Email Address"]</div>
<div class="form-group">[text* your-subject placeholder "Subject"]</div>
</div>
<div class="col-lg-6 col-md-6 col-sm-12 big-column">
<div class="form-group">[textarea your-message placeholder "Write Your Message ..."]</div>
</div>
<div class="col-lg-12 col-md-12 col-sm-12 big-column">
<div class="message-btn centred">[submit class:theme-btn "Send Message"]</div>
</div>
</div>