npm run dev does not compiled my css successfully in tailwiled.config.js ?

I am in the second episode in Building Voting App series....

I've added

spacing: {
                70: '17.5rem',
                175: '43.75rem',
            },

            maxWidth: {
                'custom': '62.5rem',
            },

       
     	

Like instructor did and when I ran npm run dev command it says css compiled successfully

But 175 spacing does not work when I click inspect on the div.... it seems has no any style but the other dev has 17.rem

so it read the first element why ?