[text* your-name placeholder "Name"]
[text* your-subject placeholder "Phone"]
[email* your-email placeholder "Email"]
[textarea your-message 40x6 placeholder "Enter your question here"]
<button type="submit" class="button-dark wpcf7-form-control wpcf7-submit"><i class="fa fa-arrow-circle-o-right" aria-hidden="true"></i> Ask question</button>