<div class="form-row">
    <div class="col-md-9 col-sm-6">

    [email* your-email class:form-control class:form-control-lg placeholder="Enter your email address"]
</div>
<div class="col-md-3 col-sm-6">
[submit class:btn class:btn-tr-primary class:theme-btn "Sign up now"]
</div>