How to set class attribute in contact form 7 Wordpress Plugin

<p class="form-item">First Name (required)<br />
    [text* your-name] </p>

<p class="form-item">Last Name (required)<br />
    [text* LastName]</p>

<p class="form-item">Your Email (required)<br />
    [email* your-email] </p>

<p class="form-item">Your Phone Number <br />
    [tel YourPhoneNumber]</p>

<p class="form-item">Other information that you think might be helpful (optional): <br />
    [textarea your-message] </p>

<p class="form-item">Upload Resume<br />
[file UploadResume limit:200000 filetypes:.docx]</p>


<p class="form-submit">[submit "Send"]</p>