Revert "Update 404.html"

This reverts commit 49804791ab98f1ee987074436b6ddb970d01951a.
Revert "Update 404.html"

This reverts commit 94df05bb6db9ba8351dc83af3d11a0942b30678e.
Revert "Update 404.html"

This reverts commit 4b36843e508d3d0107bde880b568fefdd0493e0f.
Revert "Update 404.html"

This reverts commit 4175a61799aa8f912e61a1d6e523741d94bc8357.
Revert "Update 404.html"

This reverts commit c2012079e27f36491db9a020a75aa28c83e52987.