{# app/Resources/views/Security/login.html.twig #}
{# ... you will probably extends your base template, like base.html.twig #}
{% extends 'AppBundle:base.html.twig' %}

{% block title %} Logowanie {% endblock %}

{% block main %}

{% if error %}
    <div>{{ error.messageKey|trans(error.messageData, 'security') }}</div>
{% endif %}
<h1 align=center>Login</h1>
<form action="{{ path('login') }}" method="post" class="pure-form pure-form-stacked">
    <label for="username">Username:</label>
    <input type="text" id="username" name="_username" value="{{ last_username }}" />

    <label for="password">Password:</label>
    <input type="password" id="password" name="_password" />

    {#
        If you want to control the URL the user
        is redirected to on success (more details below)
        <input type="hidden" name="_target_path" value="/account" />
    #}

    <button type="submit">Login</button>
</form>

{% endblock %}