Got it. Here is an update to the CSS that will make the Featured Images a bit bigger and keep the titles next to them, while also making those titles smaller.
@media all and (max-width: 899px) {
.layout-rows .rows .featured-image, .layout-rows .rows-excerpt .featured-image, .layout-rows-excerpt .rows .featured-image, .layout-rows-excerpt .rows-excerpt .featured-image {
width: 40%;
padding-bottom: 24%;
}
.layout-rows .rows.has-post-thumbnail .post-header, .layout-rows .rows-excerpt.has-post-thumbnail .post-header, .layout-rows-excerpt .rows.has-post-thumbnail .post-header, .layout-rows-excerpt .rows-excerpt.has-post-thumbnail .post-header {
width: calc(60% - 17px);
}
}
As for changing the post titles on the homepage, I took a look into this, but it’s much more complicated than I expected. I’m afraid this is outside the scope of support I can offer. Instead, I’d recommend checking for a plugin. There may be a free plugin available that lets you change post titles on the archive pages.