basic
<form role="form">
<div class="mb-15">
<label for="exampleInputEmail1">Email address</label>
<input type="email" class="form-control" id="exampleInputEmail1"
aria-describedby="emailHelp" placeholder="Enter email">
<small id="emailHelp" class="form-text text-muted">We'll never share your email with anyone
else.</small>
</div>
<div class="mb-15">
<label for="exampleInputPassword1">Password</label>
<input type="password" class="form-control" id="exampleInputPassword1"
placeholder="Password">
</div>
<div class="mb-15">
<div class="checkbox">
<input id="checkbox0" type="checkbox">
<label for="checkbox0">
Check me out
</label>
</div>
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>