(1) Firstly is your css file named styles.css ?

(2) Is your folder structure similar to as follows: blog/ static/ css/ styles.css templates/ your_template.html

(3) Does this reflect your settings.py: STATIC_URL = '/static/' # Base URL for static files

Ensure STATICFILES_DIRS is correctly set

STATICFILES_DIRS = [ BASE_DIR / "blog" / "static",
]