My django error should show in red but it doesn't ( it shows plain text) while my success message shows up in green color

so when i fill the login info correctly i get a message 'successfully added (username)' but when i fill in the wrong info i just shows plain black text but i want it to show error message in red color the tutorial .I followed a tutorial (by correy schafers) exactly the same but somehow i cant get the error message to show up in red color but my my success message shows up in green.

register.html

    {% extends "blog/base.html" %}
    {% load crispy_forms_tags %}
    {% block content %}
        <div class="content-section">
            
                {% csrf_token %}
                
                    Join Today
                    {{ form|crispy }}
                
                <div class="form-group">
                    Sign Up
                </div>
            
            <div class="border-top pt-3">
                <small class="text-muted">
                    Already Have An Account? <a class="ml-2" href="#">Sign In</a>
                </small>
            </div>
        </div>
    {% endblock content %}

base.html

    {% load static %}
    
    
    
    
        
        
        
    
        
            
            
        {% if title %}
            <title>Django Blog - {{ title }}
        {% else %}
            <title>Django Blog
        {% endif %}
    
    
        
          
            <div class="container">
              <a class="navbar-brand mr-4" href="{% url 'blog-home' %}">Django Blog</a>
              
              
              
              <div class="collapse navbar-collapse" id="navbarToggle">
                <div class="navbar-nav mr-auto">
                  <a class="nav-item nav-link" href="{% url 'blog-home' %}">Home</a>
                  <a class="nav-item nav-link" href="{% url 'blog-about' %}">About</a>
                </div>
                
                <div class="navbar-nav">
                  <a class="nav-item nav-link" href="#">Login</a>
                  <a class="nav-item nav-link" href="#">Register</a>
                </div>
              </div>
            </div>
          
        
        
          <div class="row">
            <div class="col-md-8">
              {% if messages %}
                {% for message in messages %}
                  <div class="alert alert-{{ message.tags }}">
                    {{ message }}
                  </div>
                {% endfor %}
              {% endif %}
              {% block content %}{% endblock %}
            </div>
            <div class="col-md-4">
              <div class="content-section">
                <h3>Our Sidebar</h3>
                <p class="text-muted">You can put any information here you'd like.
                  </p><ul class="list-group">
                    <li class="list-group-item list-group-item-light">Latest Posts</li>                    <li class="list-group-item list-group-item-light">Announcements</li>                    <li class="list-group-item list-group-item-light">Calendars</li>                    <li class="list-group-item list-group-item-light">etc</li>                  </ul>
                <p></p>
              </div>
            </div>
          </div>
        
    
        
        
        
        
        
    
    

views.py

    from django.shortcuts import render, redirect
    from django.contrib import messages
    from .forms import UserRegisterForm
    
    
    def register(request):
        if request.method == 'POST':
            form = UserRegisterForm(request.POST)
            if form.is_valid():
                form.save()
                username = form.cleaned_data.get('username')
                messages.success(request, f'Account created for {username}!')
                return redirect('blog-home')
        else:
            form = UserRegisterForm()
        return render(request, 'users/register.html', {'form': form})


forms.py

    from django import forms
    from django.contrib.auth.models import User
    from django.contrib.auth.forms import UserCreationForm
    
    
    class UserRegisterForm(UserCreationForm):
        email = forms.EmailField()
    
        class Meta:
            model = User
            fields = ['username', 'email', 'password1', 'password2']

What I have tried:

i tried to copy the tutorial as best as i can