Revert "Delete blog.css"

This reverts commit 9091338da3bc1d9d73daa6917632747b9a12fbc6.
Revert "Add post excerpt styles to main CSS file"

This reverts commit 59bef9c8f03aa4b4e5a6423daf19701fb9a69479.
Revert "Update CNAMEf file"

This reverts commit 3fe1a85440546077de6c61573b5c5e920dac6f11.
Revert "Add theopencodex.scss to Jekyll exclude"

This reverts commit 86f447565526de95e36846619ecdf067ad724780.
Revert "Delete old style.css"

This reverts commit 32aa7cd75ed4f28876567b4de2802a29d98edc31.
Revert "Change 404 message"

This reverts commit e00b7d2e1eef8b4da7a246151a1597f37a3013a0.