Need help here am stack

@media screen and (min-width: 600px) {

#gallery img { width: 100%;
}

}

What is your code? What have you tried?

@media screen and (min-width: 600px) {

#gallery img {
width: 100%;
}

}

You should remove the media type and it should be max-width: 600px instead of min-width.