[text* first-name class:form-control placeholder "First Name*"]
[text* last-name class:form-control placeholder "Last Name*"]
[email* your-email class:form-control placeholder "Email*"]
[tel* your-phone class:form-control placeholder "Phone*"]
[textarea your-message 40x6 class:form-control placeholder "Your message"]
[submit class:btn class:btn-custom "Send"]