All demo cards

The whole card as a spoiler

The container's own spoiler: the whole card is covered until it is clicked.

This is the page a click on the card opens: on ymnmods.com, the full article.

The card's JSON (288 bytes)

{
  "component": {
    "type": 17,
    "accent_color": 15680580,
    "spoiler": true,
    "components": [
      {
        "type": 10,
        "content": "## Behind a spoiler\nThe whole card was covered until you clicked it."
      },
      {
        "type": 12,
        "items": [
          {
            "media": {
              "url": "https://ymn-embed-demo.pages.dev/wallpaper.jpg"
            },
            "description": "Wallpaper"
          }
        ]
      }
    ]
  }
}