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 id="contactForm">
<div class="row">
<div class="col-lg-6 col-md-12">
<div class="form-group">
[text* Name class:form-control placeholder "Name"]
<div class="help-block with-errors"></div>
</div>
</div>
<div class="col-lg-6 col-md-12">
<div class="form-group">
[email* Email class:form-control placeholder "E-mail"]
<div class="help-block with-errors"></div>
</div>
</div>
<div class="col-lg-12 col-md-12">
<div class="form-group">
[text* Subject class:form-control placeholder "Subject"]
</div>
</div>
<div class="col-lg-12 col-md-12">
<div class="form-group contact-textarea">
[textarea* Message id:message class:form-control placeholder "Write your message"]
<div class="help-block with-errors"></div>
</div>
</div>
[acceptance your-acceptance optional] By checking this, you agree to our <a href="https://themes.envytheme.com/axolot/terms-conditions/">Terms </a> and <a href="https://themes.envytheme.com/axolot/privacy-policy/">Privacy policy</a> [/acceptance]
<div class="col-lg-12 col-md-12 text-center">
[submit class:btn class:btn-primary "Send Message"]
</div>
</div>
</div>