BASE_DIR = os.path.abspath(os.path.dirname(__file__) + '/')
STATIC_URL = BASE_DIR + '/static/'

<link rel="stylesheet" type="text/css" href="{{ STATIC_URL }}css/home_css.css" media="all" />

import os

STATIC_ROOT = os.path.join(BASE_DIR, 'static')
STATIC_URL = "/static/"

TEMPLATE_CONTEXT_PROCESSORS = (
    'django.contrib.auth.context_processors.auth',
    'django.core.context_processors.debug',
    'django.core.context_processors.i18n',
    'django.core.context_processors.media',
    'django.core.context_processors.static',
    'django.core.context_processors.request',
    'django.contrib.messages.context_processors.messages',
)