Adding a font to an app

This CSS string can be pasted into the meta data cell containing CSS to change the font of an app:

@font-face {
 font-family: 'Oswald';
 src: local('Oswald Regular'), local('Oswald-Regular'), url(https://fonts.gstatic.com/s/oswald/v17/TK3iWkUHHAIjg752GT8Gl-1PKw.woff2) format('woff2');
}