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 list.
In Notes on iCloud.com, tap in the toolbar.
In portrait orientation, if the sidebar is visible, is on top of the notes list. If you do not see the notes list, see Show the folder or notes 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 in the toolbar, then choose the format you want to apply.