forms

default theme

single input

<input class="form" type="username" placeholder="Enter your username" />

from with labels

<form class="form-group">
  <label for="email" class="label">Email</label>
  <input id="email" class="form" type="email" placeholder="Enter your email" />
  <label for="password" class="label">Password</label>
  <input id="password" class="form" type="password" placeholder="Enter your password" />
</form>    

full form example

<form class="form-group">
  <label for="email" class="label">Email</label>
  <input id="email" class="form" type="email" placeholder="Enter your email" />
  <label for="password" class="label">Password</label>
  <input id="password" class="form" type="password" placeholder="Enter your password" />
  <div class="part">
    <input class="checkbox" type="checkbox" id="checkbox" />
    <label class="label" for="checkbox">check me</label>
  </div>
  <div class="part">
    <input class="radio" type="radio" id="one" name="one" value="true" />
    <label for="one" class="label">one</label>
  </div>
  <div class="part">
    <input class="radio" type="radio" id="tow" name="tow" value="false" />
    <label for="tow" class="label">tow</label>
  </div>
  <div class="part">
    <button class="btn">submit</button> 
  </div>
</form>