Hi there, the code I pasted above needs to go into the style.css file at the bottom, if you’ve not added any of your own custom css previously, then you won’t have a problem. However, if you’re not using a child theme, then each time you update the theme it will get overwritten, so you’ll need to add it back after each update.

So the code below, hides the slider when the screen size is between those two values.

@media only screen
and (min-device-width : 375px)
and (max-device-width : 667px) {
#slider {
display: none;
}
}