{% extends 'layout.html' %} {% block content %} {{form.hidden_tag()}} Login {{form.username.label(class="form-control-label")}} {% if form.username.errors %} {{form.username(class="form-control form-control-lg is-invalid")}} {% for error in form.username.errors %} {{ error }} {% endfor %} {% else %} {{form.username(class="form-control form-control-lg")}} {% endif %} {{form.password.label(class="form-control-label")}} {% if form.password.errors %} {{form.password(class="form-control form-control-lg is-invalid")}} {% for error in form.password.errors %} {{ error }} {% endfor %} {% else %} {{form.password(class="form-control form-control-lg")}} {% endif %} {{form.submit(class="btn btn-info")}} {% endblock %}