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HTML Webseiten Optimierung

Hey IT Community

Ich habe vor kurzem eine Webseite entwickelt und es mal durch verschiedene Validatoren laufen lassen, bis auf wenige Anmerkungen ist meine Webseite optimal (Yuhuu erstmal). Könnt ihr mal sagen, wie ich diese Meldungen los werde:

1. Using the meta element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead

2. The Content-Type was text/html. Using the HTML parser.

3.The language attribute on the script element is obsolete. You can safely omit it.

Vielen Dank

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