<div class="row">
 <div class="col-sm-6">
  <div class="mb-4">
   <label>Your Name *</label>[text* your-name id:form-name akismet:author placeholder "Your Name"]
  </div>
 </div>

 <div class="col-sm-6">
  <div class="mb-4"> 
    <label>Your Email *</label>[email* your-email id:form-email akismet:author_email placeholder "Email"]
  </div>
 </div>

 <div class="col-sm-6">
  <div class="mb-4">
   <label>Your Phone *</label>[text* your-phone id:form-phone akismet:author placeholder "Your phone"]
  </div>
 </div>

<div class="col-sm-6">
  <div class="mb-4">
   <label>Subject</label>[text your-subject id:form-subject akismet:author placeholder "Service name"]
  </div>
 </div>

 <div class="col-md-12">
  <div class="mb-4">
   <label>Your Message</label>[textarea your-message class:form-control id:textarea x3 placeholder "Message"]
  </div>
 </div>
</div>

[submit class:btn class:btn-secondary class:btn-sm "Submit"]