scroll-margin-block-start

Baseline 已广泛支持

此功能已成熟，并可在多种设备和浏览器版本上运行。自 2021 年 9 月起，所有浏览器均已支持此功能。

scroll-margin-block-start 属性定义了块维度的起始位置的滚动捕捉区域的外边距，用于将此框捕捉到捕捉端口。滚动捕捉区域通过获取变换后的边框、找到其矩形边界框（在滚动容器的坐标空间中与轴对齐），然后添加指定的外部偏移量来确定。

试一试

scroll-margin-block-start: 0;

scroll-margin-block-start: 20px;

scroll-margin-block-start: 2em;

<section class="default-example" id="default-example">
  <div class="scroller">
    <div>1</div>
    <div id="example-element">2</div>
    <div>3</div>
  </div>
  <div class="info">Scroll »</div>
</section>

.default-example .info {
  inline-size: 100%;
  padding: 0.5em 0;
  font-size: 90%;
  writing-mode: vertical-rl;
}

.scroller {
  text-align: left;
  height: 250px;
  width: 270px;
  overflow-y: scroll;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  border: 1px solid black;
  scroll-snap-type: y mandatory;
}

.scroller > div {
  flex: 0 0 250px;
  background-color: rebeccapurple;
  color: white;
  font-size: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  scroll-snap-align: start;
}

.scroller > div:nth-child(even) {
  background-color: white;
  color: rebeccapurple;
}

语法

css

/* <length> values */
scroll-margin-block-start: 10px;
scroll-margin-block-start: 1em;

/* Global values */
scroll-margin-block-start: inherit;
scroll-margin-block-start: initial;
scroll-margin-block-start: revert;
scroll-margin-block-start: revert-layer;
scroll-margin-block-start: unset;