In crypto exchange website, is it possible for the sell price of a coin to go higher than the buy price?

I am using a website to buy/sell crypto currency on instant basis. I don’t know how the buy and sell price is calculated. Although the question might sound stupid but out of curiosity, is it possible for the sell price to go higher than the buy price by any chance?

Edit: It’s not exactly bid and ask. For example, in CoinDCX, there is an insta feature where users can buy or sell coins instantly without bidding or asking. I haven’t been into share trading so I was assuming this feature would be present there as well. Guess it’s not.