Bagaimana untuk mengalihkan kotak skrol ke badan menggunakan "overflow:hidden" pada "html"

Question

Saya baru terjumpa penggunaan overflow:hidden 在 html dan nampaknya tidak logik bagi saya:

* {
  all: unset;
  display: revert;
}
html {
  height: 100vh;
  overflow: hidden;
  background: black;
}
body {
  height: 50vh;
  font-size: 5rem;
  background: white;
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  overflow-y: scroll;
}

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Ini mengenai memindahkan kotak skrol dari elemen html 移动到 body ，但我不明白为什么这个例子只适用于 overflow:hidden？ body的高度已经只有50vh，那么html supaya ia tidak melimpah, bukan?

Answer 1

Dari Spesifikasi:

Menetapkan limpahan pada html akan melumpuhkan pembiakan dan mengekalkan limpahan pada elemen badan