no problem idiom informal
A2 没问题
said to show that you will or can do what someone has asked you to
"Can you get me to the station by 11.30?" "No problem." “你能在11点半之前送我到车站吗？”“没问题。”
A2 （用于回答对方的感谢）没什么
used as a friendly answer when someone thanks you for something you have done
"Thanks for the lift." "No problem." “谢谢你让我搭便车。”“没什么。”