FSCSS

Figured Shorthand Cascading Style Sheet (FSCSS)
For simplifying CSS coding by introducing shorthand syntax and variables.
example usage

   exec({
      type: 'text',
         content: 'body { background: #0%2([f]); }',
            onSuccess: (styleElement) => console.log('CSS applied:', styleElement),
               onError: (msg) => console.warn('Error applying CSS:', msg)
                });