Wieso verändern sich die Frames?

[Marcel Georgii]

Line 4, column 38: there is no attribute "FRAMEBORDER" (explain...).

<frameset cols="*,750,*" frameborder="0" framespacing="0">
                                        ^

Was soll da falsch sein? Etwas die Gänsefüschen?

Line 4, column 55: there is no attribute "FRAMESPACING" (explain...).

<frameset cols="*,750,*" frameborder="0" framespacing="0">
                                                         ^

Was soll da falsch sein? Etwa auch die Gänsefüschen?

Line 4, column 58: document type does not allow element "FRAMESET" here (explain...).

<frameset cols="*,750,*" frameborder="0" framespacing="0">
                                                            ^

Was soll da falsch sein?

Line 20, column 6: end tag for "HTML" which is not finished (explain...).

</html>

Was soll da falsch sein?

Merci für die Erklärungen!