Here is the Contact Form 7 template and source code for the Contact form.
To edit this form go to Contact> then edit your targeted form
<div class="contact-form">
<div class="container">
<div class="row">
<div class="col-lg-6 col-md-12">
<div class="form-group">
[text* Fname class:form-control placeholder "Your name"]
</div>
</div>
<div class="col-lg-6 col-md-12">
<div class="form-group">
[email* uemail class:form-control placeholder "Your email"]
</div>
</div>
<div class="col-lg-12 col-md-12">
<div class="form-group">
[text* Subject class:form-control placeholder "Your subject"]
</div>
</div>
<div class="col-lg-12 col-md-12">
<div class="form-group">
[textarea message class:form-control placeholder "Your message"]
</div>
</div>
<div class="col-lg-12 col-md-12">
[acceptance acceptance-737] By checking this, you agree to our <a href="https://themes.envytheme.com/milian/terms-conditions/">Terms </a> and <a href="https://themes.envytheme.com/milian/privacy-policy/">Privacy policy</a> [/acceptance]
</div>
<div class="col-lg-12 col-md-12">
<button type="submit">Send Message</button>
</div>
</div>
</div>
</div>