Make sure you are in us-east-1 (N. Virginia) for the lab environment.

Code for the static site is here.

NOTE: When creating the bucket, uncheck all four checkboxes on step 3 — Set Permissions. If you skip this step, the bucket policy will have no effect. If you made a mistake and created the bucket without unchecking the checkboxes, you may go to Bucket > Permissions > Public access settings > Edit, and uncheck all four restrictions. Then add a bucket policy, go to Bucket > Permissions > Bucket Policy, and add the following JSON statement (replacing <MY_BUCKET> with your bucket name):

{
  "Version":"2012-10-17",
  "Statement":[{
     "Sid":"PublicReadGetObject",
     "Effect":"Allow",
     "Principal": "*",
     "Action":["s3:GetObject"],
     "Resource":["arn:aws:s3:::<MY_BUCKET>/*"]
  }]
}

Ensure the trailing /* is present so the policy applies to all objects within the bucket.