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="row">
<div class="col-lg-6">
<div class="form-group">
[text* fname class:form-control placeholder "First Name"]
</div>
</div>
<div class="col-lg-6">
<div class="form-group">
[text* lname class:form-control placeholder "Last Name"]
</div>
</div>
<div class="col-lg-6">
<div class="form-group">
[email* email class:form-control placeholder "Email"]
</div>
</div>
<div class="col-lg-6">
<div class="form-group">
[text* phone class:form-control placeholder "Phone"]
</div>
</div>
<div class="col-lg-12">
<div class="form-group">
[textarea* message rows:5 class:form-control placeholder "Message"]
</div>
</div>
<div class="col-lg-12">
[acceptance acceptance-910] By checking this, you agree to our <a href="https://themes.envytheme.com/mobixa/terms-conditions/">Terms </a> and <a href="https://themes.envytheme.com/mobixa/privacy-policy/">Privacy policy</a> [/acceptance]
</div>
<div class="col-lg-12 col-md-12">
<button class="default-btn" type="submit">
Send Message
<i class="flaticon-right"></i>
</button>
</div>
</div>