Hi David,

Create a file in your /css/ folder - I tend to call mine RTEStyles.css and import the external font.

Add:

@import url('https://fonts.googleapis.com/css2?family=Permanent+Marker&display=swap');

body {
}

/**umb_name:Heading*/
h1 {
    color: red;
    font-family: 'Permanent Marker', cursive;
}

Then go and add this stylesheet to your RTE Data type(s).

You should now see the style sheet as an option in the formats dropdown.

Just remember to add the import to your front end styles too or it won't do anything.