Create notes on iCloud.com
You can start a new note and change the formatting of lines or words. Notes are listed by last-modified date, with the most recent note at the top of the notes list.
In Notes on iCloud.com, tap the Create Note button in the toolbar.
In portrait mode, if the sidebar is visible, the Create Note button is on top of the notes list. If you don’t see the notes list, see Show the notes or folder list in Notes on iCloud.com.
Type your note.
Your changes are saved automatically and your new note appears in the notes list, identified by the first few words of the note.
You can change the formatting of lines or words in a note. Select the text you want to format, tap the Choose Style button in the toolbar, then choose the format you want to apply.
To attach items to notes, use the Notes app on your iOS device, iPadOS device, or Mac that is signed in with the same Apple ID. You can view or download those attachments in Notes on iCloud.com.
After you create or edit notes on iCloud.com, your changes appear automatically in Notes on your devices that are signed in with the same Apple ID. If you’re using upgraded notes, your changes appear on your devices with upgraded notes that are signed in with the same Apple ID.