Sorry about my confusion.
I mean, will it be possible to buy and stake ADA directly over the Cardano web site?
My wife and son thought they saw some reference to this.
As Zyroxa rightly says this is not something that is available or likely to ever be possible.
However, Daedalus and Yoroi are the official wallets, both accessible via the cardano.org website. You will be able to stake with them, and I know there is potential in the future for people to possibly buy ada in the Daedalus wallet.