Hi Berit,
I apologize for the delay. Rather than changing the width of the block, I could provide a style to hide the cover block in mobile, which should help optimization for mobile devices.
You can hide the block using this CSS:
@media screen and (max-width: 768px) {
.site-main > .wp-block-cover {
display: none;
}
}
Also, make sure your image is saved in the .webp format for maximum file size savings. When it comes to large images and the LCP, there’s really no way around this optimization aside from either removing the image altogether or compressing the file size as much as possible. It just becomes a matter of preference whether you prefer having the image or prefer optimizing the page as much as possible.
I hope this helps.
Thanks!
.
