Good for what ails you.
@media only screen and (max-width: 999px) and (min-width: 691px) {
.featured-media-under-header__featured-media .post-featured-img {
background-image: url("https://theagenda.co/wp-content/uploads/2024/05/241dd19e4cb5af1192a9c9a2280495be.jpg")!important;
}
}
@media only screen and (max-width: 690px) {
.featured-media-under-header__featured-media .post-featured-img {
background-image: url("https://theagenda.co/wp-content/uploads/2024/05/241dd19e4cb5af1192a9c9a2280495be-768x536.jpg")!important;
}
}