::details-content

[Rolf B]

Hallo Matthias,

<details>
::details-content is bullshit
</details>

details::details-content {
   padding: 2em;
   border: 2em solid hotpink;
   background-color: chartreuse;
}

Versus

<details>
  <div>
   div in details is better
  </div>
</details>

details div {
  background-color: chartreuse;
  padding: 2em;
  border: 2em solid hotpink;
}

Rolf