A meta tag attempting to declare the character encoding declaration was found too late, and the encoding of the parent document was used instead. The meta tag needs to be moved to the start of the head part of the document.
Canfuwyd tag meta yn ceisio datgan y datganiad amgodio nod yn rhy hwyr, a defnyddiwyd amgodio'r ddogfen rhiant yn lle hynny. Mae angen symud y tag meta i ddechrau rhan pen y ddogfen.