Update the login.html form to the correct bootstrap format
<form class="form form-horizontal" action="" method="post">
{{form.hidden_tag()}}
<p class="text-center">
{{form.email.label}} <br>
{{form.email(size=32)}}
{% for error in form.email.errors %}
<span style="color: red;">[{{ error }}]</span>
{% endfor %}
</p>
<p class="text-center">
{{form.password.label}} <br>
{{form.password(size=32)}}
{% for error in form.password.errors %}
<span style="color: red;">[{{ error }}]</span>
{% endfor %}
</p>
<p class="text-center">{{form.remember_me()}} {{ form.remember_me.label }} </p>
<p class="text-center">{{form.submit()}} </p>
</form>
<p class="text-center">New User? <a href="{{ url_for('register') }}">Click to Register!</a></p>
</div> <!-- /.row -->