[Theme Horse Support Team]

Hi Heidi,

Please try below custom css code. Hope it solves your issue.

.featured-slider {
    margin: 0 auto;
    max-width: 1170px;
}
@media only screen and (max-width: 1290px) {
	.featured-slider {
		width: 964px;
	}
}
@media only screen and (max-width: 1023px) {
	.featured-slider {
		width: 708px;
	}
}
@media only screen and (max-width: 767px) {
	.featured-slider {
		width: 300px;
	}
}
@media only screen and (min-width: 480px) and (max-width: 767px) {
	.featured-slider {
		width: 460px;
	}
}

Thank you!