Squarespace fonts in Code block

Is it possible to add Squarespace fonts in a code block? If so, how? I am specifically interested in using "Alternate Gothic No. 3 D"

In general you add something like the following to a code block.

<style>

  body {
  
    font-family: alternate-gothic-no-3-d;
    
    }
    
  </style>

Without more detail it is hard to provide more specific information.