html`＜mark＞`

<mark>以语义方式突出显示部分文本

<section>
  <h2>Default Style</h2>
  <p>Here, the <mark>searched term</mark> is highlighted.
</section>
<section>
  <h2>Custom Style</h2>
  <p>Here, the <mark class="styled">searched term</mark> is highlighted.
</section>

body {
  padding: 16px;
  background-color: black;
  color: #fff;
}

section {
  margin-bottom: 64px;
}

h2 {
  color: #9b8ee1;
}

mark.styled{
  background-color: transparent;
/*   color: red;  */
  color: yellow;
}

See the Pen html`<mark>` by liu874396180 ( @liu874396180) on CodePen.