page-break-inside

/* Keyword values */
page-break-inside: auto;
page-break-inside: avoid;

/* Global values */
page-break-inside: inherit;
page-break-inside: initial;
page-break-inside: revert;
page-break-inside: unset;

<div class="page">
  <p>This is the first paragraph.</p>
  <section class="list">
    <span>A list</span>
    <ol>
      <li>one</li>
<!--       <li>two</li> -->
    </ol>
  </section>
  <ul>
    <li>one</li>
<!--     <li>two</li> -->
  </ul>
  <p>This is the second paragraph.</p>
  <p>This is the third paragraph, it contains more text.</p>
  <p>This is the fourth paragraph. It has a little bit more text than the third one.</p>
</div>

.page {
  background-color: #8cffa0;
  height: 90px;
  width: 200px;
  columns: 1;
  column-width: 100px;
}

.list, ol, ul, p {
  break-inside: avoid;
}

p {
  background-color: #8ca0ff;
}

ol, ul, .list {
  margin: 0.5em 0;
  display: block;
  background-color: orange;
}

p:first-child {
  margin-top: 0;
}