text-emphasis-position CSS property

text-emphasis-position: auto;

text-emphasis-position: over right;

text-emphasis-position: under right;

text-emphasis-position: auto;
writing-mode: vertical-rl;

text-emphasis-position: over left;
writing-mode: vertical-rl;

text-emphasis-position: over right;
writing-mode: vertical-rl;

<section id="default-example">
  <p>
    I'd far rather be
    <span class="transition-all" id="example-element">happy than right</span>
    any day.
  </p>
</section>

p {
  font: 1.5em sans-serif;
}

#example-element {
  text-emphasis: filled double-circle #ffb703;
}

/* Initial value */
text-emphasis-position: auto;

/* Keyword values */
text-emphasis-position: over;
text-emphasis-position: under;

text-emphasis-position: over right;
text-emphasis-position: over left;
text-emphasis-position: under right;
text-emphasis-position: under left;

text-emphasis-position: left over;
text-emphasis-position: right over;
text-emphasis-position: right under;
text-emphasis-position: left under;

/* Global values */
text-emphasis-position: inherit;
text-emphasis-position: initial;
text-emphasis-position: revert;
text-emphasis-position: revert-layer;
text-emphasis-position: unset;

<p class="unsupported">
  The <code>auto</code> value is not supported in your browser.
</p>
<label for="position">Emphasis position:</label>
<select id="position">
  <option value="auto">auto</option>
  <option value="over-right">over right</option>
  <option value="over-left">over left</option>
  <option value="under-right">under right</option>
  <option value="under-left">under left</option>
  <option value="preferred">preferred</option>
</select>

<section id="setting" class="auto">
  <p class="horizontal" lang="zh">你好世界</p>
  <!-- Hello World in Chinese -->
  <p class="vertical" lang="ja">世界、こんにちは。</p>
  <!-- Hello World in Japanese -->
</section>

.unsupported {
  color: red;
}
@supports (text-emphasis-position: auto) {
  .unsupported {
    display: none;
  }
}
.horizontal {
  writing-mode: horizontal-tb;
}
.vertical {
  writing-mode: vertical-rl;
}
section {
  display: flex;
  justify-content: space-around;
}

section p {
  text-emphasis: filled circle tomato;
  text-emphasis-position: auto;
}
.over-right p,
.preferred p [lang="ja"] {
  text-emphasis-position: over right;
}
.over-left p {
  text-emphasis-position: over left;
}
.under-right p,
.preferred p [lang="zh"] {
  text-emphasis-position: under right;
}
.under-left p {
  text-emphasis-position: under left;
}
.preferred p [lang="ja"] {
}

const position = document.querySelector("#position");
const setting = document.querySelector("#setting");
const updateClass = () => {
  const currentClass = setting.classList;
  setting.classList.replace(currentClass, position.value);
};
position.addEventListener("change", updateClass);

ruby {
  text-emphasis: none;
}

em {
  text-emphasis: dot; /* Set text-emphasis for <em> elements */
}

em rt {
  display: none; /* Hide ruby inside <em> elements */
}