stacked-form.html

<form action="#" class="atkForm atkForm--stacked b" novalidate>
  <div class="atkForm__fields">
    <div class="atkForm__group">
      <label class="atkForm__group--label" for="firstName">First Name</label>
      <input class="atkForm__group--input" type="text" name="firstName" required />
      <div class="atkForm__group--error">First Name is required</div>
    </div>
    <div class="atkForm__group">
      <label class="atkForm__group--label" for="lastName">Last Name</label>
      <input class="atkForm__group--input" type="text" name="lastName" required />
      <div class="atkForm__group--error">Last Name is required</div>
    </div>
    <div class="atkForm__group">
      <label class="atkForm__group--label" for="email">Enter Your Email Address</label>
      <input class="atkForm__group--input" type="email" name="email" required />
      <div class="atkForm__group--message">How we use your email <span>?</span></div>
      <div class="atkForm__group--error">Email is required</div>
    </div>
    <div class="atkForm__group">
      <label class="atkForm__group--label" for="password">Password</label>
      <input class="atkForm__group--input" type="password" name="password" required />
      <div class="atkForm__group--error">Password is required</div>
    </div>
  </div>
  <div class="atkForm__action">
    <button class="atkForm__submit" type="submit">Submit</button>
  </div>
</form>