CSS父元素悬停时子元素文本动画的实现技巧

<div class='container'>
  <main class='main'>
    <div class='nav'>
      <div class='navIcon'>
        <img src="https://picsum.photos/40" height={40} width={40} />
      </div>
      <ul class='snip1168'>
        <li class='current'><a href="#" data-hover="Work">Work</a></li>
        <li><a href="#" data-hover="Recs">Recs</a></li>
        <li><a href="#" data-hover="Say Hi">Say Hi</a></li>
      </ul>
    </div>
  </main>
</div>

html,
body {
  padding: 0;
  margin: 0;
  font-family: "sequel-sans-roman", -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen, Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
}

.container {
  padding: 0 2rem;
}

.main {
  min-height: 100vh;
  padding: 4rem 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

a {
  color: inherit;
  text-decoration: none;
}

* {
  box-sizing: border-box;
}

.navIcon {
  display: inline-block;
  flex-grow: 1;
}

.nav {
  display: flex;
  justify-content: space-between;
  width: 100%;
  margin-top: 2.4em;
}

.snip1168 {
  text-align: center;
  text-transform: uppercase;
}

.snip1168 * {
  box-sizing: border-box;
}

/* 原始的li样式 */
.snip1168 li {
  list-style: none; /* 移除列表点 */
  margin: 0 1.5em;
  padding: 0;
}

/* 将线条动画相关样式和定位基准移至 li 元素 */
.snip1168 li {
  padding: 2.4em 0 0.5em; /* 调整内边距，确保文本和线条位置正确 */
  color: rgba(0, 0, 0, 1);
  position: relative; /* 为伪元素提供定位上下文 */
  text-decoration: none;
  display: inline-block; /* 确保li元素能正确包含伪元素并响应宽度 */
}

/* li的伪元素用于线条动画 */
.snip1168 li:before,
.snip1168 li:after {
  position: absolute;
  -webkit-transition: all 0.35s ease;
  transition: all 0.35s ease;
}

.snip1168 li:before {
  top: 0;
  display: inline-block; /* 确保伪元素能正确显示和应用宽度 */
  height: 3px;
  width: 0%;
  content: "";
  background-color: black;
}

/* li 悬停时线条动画效果 */
.snip1168 li:hover:before,
.snip1168 .current li:before { /* 激活状态也应用此效果 */
  opacity: 1;
  width: 100%;
}

.snip1168 li:hover:after,
.snip1168 .current li:after { /* 如果有after伪元素也做相应调整 */
  max-width: 100%;
}

.mainText {
  text-transform: uppercase;
  font-size: 1.1rem;
}

/* 为 a 元素添加文本位移动画 */
.snip1168 li a {
  transition: transform ease 400ms; /* 定义过渡效果 */
  transform: translate(0, 0); /* 初始位置 */
  display: inline-block; /* 确保 transform 属性生效 */
}

/* li 悬停时 a 元素文本向上位移 */
.snip1168 li:hover a {
  transform: translate(0, -10px); /* 悬停时向上移动10px */
}