Problem: As the title says I am building a django project the base.html extended to homepage.html and works fine, static images appear, but home.css does not works anywhere.
Update
- I have switched in the base.html
 - from this 
<link rel="stylesheet" href="{% static 'css/home.css' %}"> - to this 
<link href="css/home.css" rel="stylesheet" /> - than I have also tried this: 
<link rel="stylesheet" type="text/css" href="{% static 'css/home.css' %}" /> - It deletes a formatting on -s that was caused by another previously used .css that has been deleted since but the formatting sticked on. 
I have called this css property 
thickkk{color: red;}many places in both base.html and home.html and it still not working. - I have also get the following error message if I inspect the site with/F12/consol/ 
127.0.0.1/:1 Refused to apply style from 'http://127.0.0.1:8000/css/home.css' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled. 
Update ERROR message
Refused to apply style from 'http://127.0.0.1:8000/stacic/css/home.css' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.
Properties: Python 3.7, Bootstrap 4
settings.py
STATICFILES_DIRS = [os.path.join(BASE_DIR, 'baseprojectfolder/static/')]
STATIC_ROOT = os.path.join(BASE_DIR, 'static')
STATIC_URL = '/static/'
base.html
- I have created a base.html that hold the navbar and the footer.
 - This also has the CSS imported from a static css and also from bootstrap
 - It finds the static files because it imports the images that are appearing both here and in the home page
 
<!doctype html>
<html lang="en">
{% load static %}
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <meta name="description" content="xz">
  <meta name="author" content="xz">
  <link rel="shortcut icon" type="image/png" href="{% static 'favicon.ico' %}"/>
  <link rel="icon" href="/docs/4.0/assets/img/favicons/favicon.ico">
  <title>Click Helps - BE PART OF THE NEW CREATION</title>
  <link rel="canonical" href="https://getbootstrap.com/docs/4.3/examples/carousel/">
  <!-- Bootstrap core CSS -->
  <link href="/docs/4.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
  <link rel="stylesheet" href="{% static 'css/home.css' %}">
</head>
....
<!-- Bootstrap core JavaScript ================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script>window.jQuery || document.write('<script src="/docs/4.3/assets/js/vendor/jquery-slim.min.js"><\/script>')</script>
<script src="/docs/4.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-xrRywqdh3PHs8keKZN+8zzc5TX0GRTLCcmivcbNJWm2rs5C8PRhcEn3czEjhAO9o" crossorigin="anonymous"></script>
<!-- I have placed in the followring 3 line from bootstrap to make JS work -->
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
</body>
</html>
home.html
- I have used the center CSS property I have created
 
{% extends 'applicaonfolderofmine/templates/base.html' %}
{% load static %}
{% block content %}
<main>
<body>
  <div class="container">
    <h1 id="about" class="center" >About</h1>
...
home.css
- it can be found in "django-project/certainapplication/static/css/home.css"
 
.center {
  margin: auto;
  width: 60%;
  padding: 10px;
}
Error messages in terminal
Not Found: /docs/4.3/dist/css/bootstrap.min.css
[22/Feb/2020 15:55:26] "GET /docs/4.3/dist/css/bootstrap.min.css HTTP/1.1" 404 2494
Not Found: /docs/4.3/dist/js/bootstrap.bundle.min.js
[22/Feb/2020 16:24:29] "GET /docs/4.3/dist/js/bootstrap.bundle.min.js HTTP/1.1" 404 2509
Not Found: /docs/4.3/dist/js/bootstrap.bundle.min.js
[22/Feb/2020 16:24:29] "GET /docs/4.3/dist/js/bootstrap.bundle.min.js HTTP/1.1" 404 2509
I have read the following articles but they haven't answered my question:
- css for base template in django
 - Adding css file after all extensions css files
 - Django UserProfile extension
 - Background from CSS not working in Base.html
 - Django mptt, extends "base.html"
 - { % extends parent _ template|default:"base.html" % } vs {% extends "base.html" %} in Django?
 - Django templates extending and CSS
 - How does Django's extends work?
 
```-s that was caused by another previously used .css that hs been deleted since but the formatting sticked on. I have called this css property ```thickkk {font-weight: bold;}``` many places in both base.html and home.html and it still not working.
– sogu Feb 22 '20 at 18:36