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What is the best way to block incoming traffic from certain websites regardless of which port on Windows 10?

When I open my web browser and navigate to www.cnn.com , it will download all the text + graphics into my local machine for the web browser to interpret / view.

How could I tell windows to block all incoming traffic from www.cnn.com?

So far, I have attempted to do the following with no success:

open C:WindowsSystem32driversetchosts as administrator which looks like:

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#      102.54.94.97     rhino.acme.com          # source server
#       38.25.63.10     x.acme.com              # x client host

# localhost name resolution is handled within DNS itself.
#   127.0.0.1       localhost
#   ::1             localhost

Change it to look like:

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#      102.54.94.97     rhino.acme.com          # source server
#       38.25.63.10     x.acme.com              # x client host

# localhost name resolution is handled within DNS itself.
    127.0.0.1       localhost     https://www.cnn.com     http://www.cnn.com
#   ::1             localhost

I restarted my Windows 10 computer. But when I tried to navigate to www.cnn.com in my web browser, it was still able to successfully download all the data.

I tried to do:

ipconfig /flushdns  

as suggested by this link, however all the CNN packets were still being downloaded.

Has anybody been able to figure out a way to prevent packets from being downloaded from a specific IP address / URL ?

Do you think I need to use a firewall like TinyWall ?