Debug: The Lying Gallery

Every attribute in this gallery is wrong: the hero carries loading="lazy" (it is the LCP), sizes="100vw" on a 300px card slot, no width/height anywhere (layout shift), and an alt was pasted onto a <source>. Repair: hero gets fetchpriority="high" and no lazy; card sizes says 300px; add intrinsic dimensions to both images; move alt to the <img> only.

Difficulty: advanced