如何在django-login视图中添加红色星号(*)？

from django import forms
from django.contrib.auth.forms import AuthenticationForm

class CustomLoginForm(AuthenticationForm):
    username = forms.CharField(required=True, widget=forms.TextInput(attrs={'class': 'form-control'}))
    password = forms.CharField(required=True, widget=forms.PasswordInput(attrs={'class': 'form-control'}))

from django.shortcuts import render
from .forms import CustomLoginForm

def login_view(request):
    form = CustomLoginForm()
    return render(request, 'login.html', {'form': form})

<form method="post">
    {% csrf_token %}
    {{ form.as_p }}
    <button type="submit">登录</button>
</form>