Update the WordPress text html editor font without a plugin

The text html editor on your WordPress website may be in a font that you do not like on there. You can update the font of the text html editor without a plugin if you add this code to your functions.php file. You may want to backup your WordPress website before you make updates to the functions.php file.

/**
 * Update the text html editor font
 *
 * @author WPSnacks.com
 * @link https://www.wpsnacks.com
 */
function the_editor_font(){
echo "<style type='text/css'>
#editorcontainer textarea#content {
font-family: YOURFONTHERE;
font-size: 14px;
color: #111;
}
</style>";
} 
add_action("admin_print_styles", "the_editor_font");

You can then replace YOURFONTHERE with the font and the font size and font color that you want to use. Now if that works for you it would update the font of the html editor on your WordPress website on there.