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---
title: scroll-snap-stop
slug: Web/CSS/scroll-snap-stop
tags:
- CSS
- CSS スクロールスナップ
- Reference
- scroll-snap-stop
- ウェブ
translation_of: Web/CSS/scroll-snap-stop
---
<div>{{CSSRef}}{{SeeCompatTable}}</div>
<p><a href="/ja/docs/Web/CSS">CSS</a> の <strong><code>scroll-snap-stop</code></strong> プロパティは、スクロールコンテナーが可能なスナップ位置を「通り過ぎる」ことを許可するかどうかを定義します。</p>
<pre class="brush:css no-line-numbers">/* キーワード値 */
scroll-snap-stop: normal;
scroll-snap-stop: always;
/* グローバル値 */
scroll-snap-type: inherit;
scroll-snap-type: initial;
scroll-snap-type: unset;
</pre>
<p>{{cssinfo}}</p>
<h2 id="Syntax" name="Syntax">構文</h2>
<h3 id="Values" name="Values">値</h3>
<dl>
<dt><code>normal</code></dt>
<dd>スクロールコンテナーの視覚的な{{Glossary("viewport", "ビューポート")}}がスクロールされた時、可能なスナップ位置を「通り過ぎる」ことがあります。</dd>
<dt><code>always</code></dt>
<dd>スクロールコンテナーは可能なスナップ位置を「通り過ぎる」ことはありません。最初の要素のスナップ位置にスナップします。</dd>
</dl>
<h3 id="Formal_syntax" name="Formal_syntax">形式文法</h3>
{{csssyntax}}
<h2 id="Example" name="Example">例</h2>
<p>この例は {{cssxref("scroll-snap-type")}} から複製したものに多少の修正を加えたものです。</p>
<h3 id="CSS">CSS</h3>
<pre class="brush: css">/* setup */
:root, body {
height: 100%;
display: flex;
align-items: center;
justify-content: space-between;
flex-flow: column nowrap;
font-family: monospace;
}
.container {
display: flex;
overflow: auto;
outline: 1px dashed lightgray;
flex: none;
}
.container.x {
width: 100%;
height: 128px;
flex-flow: row nowrap;
}
.container.y {
width: 256px;
height: 256px;
flex-flow: column nowrap;
}
/* definite scroll snap */
.mandatory-scroll-snapping {
scroll-snap-stop: always;
}
.proximity-scroll-snapping {
scroll-snap-stop: normal;
}
/* scroll-snap */
.x.mandatory-scroll-snapping {
scroll-snap-type: x mandatory;
}
.y.mandatory-scroll-snapping {
scroll-snap-type: y mandatory;
}
.x.proximity-scroll-snapping {
scroll-snap-type: x proximity;
}
.y.proximity-scroll-snapping {
scroll-snap-type: y proximity;
}
.container > div {
text-align: center;
scroll-snap-align: center;
flex: none;
}
.x.container > div {
line-height: 128px;
font-size: 64px;
width: 100%;
height: 128px;
}
.y.container > div {
line-height: 256px;
font-size: 128px;
width: 256px;
height: 256px;
}
/* appearance fixes */
.y.container > div:first-child {
line-height: 1.3;
font-size: 64px;
}
/* coloration */
.container > div:nth-child(even) {
background-color: #87EA87;
}
.container > div:nth-child(odd) {
background-color: #87CCEA;
}
</pre>
<h3 id="HTML">HTML</h3>
<pre class="brush: html"><div class="container x mandatory-scroll-snapping" dir="ltr">
<div>X Mand. LTR </div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</div>
<div class="container x proximity-scroll-snapping" dir="ltr">
<div>X Proximity LTR</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</div>
<div class="container y mandatory-scroll-snapping" dir="ltr">
<div>Y Mand. LTR</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</div>
<div class="container y proximity-scroll-snapping" dir="ltr">
<div>Y Prox. LTR</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</div>
<div class="container x mandatory-scroll-snapping" dir="rtl">
<div>X Mandatory RTL</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</div>
<div class="container x proximity-scroll-snapping" dir="rtl">
<div>X Proximity RTL</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</div>
<div class="container y mandatory-scroll-snapping" dir="rtl">
<div>Y Mand. RTL</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</div>
<div class="container y proximity-scroll-snapping" dir="rtl">
<div>Y Prox. RTL</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</div>
</pre>
<p>{{EmbedLiveSample("Example", "100%", "1630")}}</p>
<h2 id="Specification" name="Specification">仕様書</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">仕様書</th>
<th scope="col">状態</th>
<th scope="col">備考</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName("CSS Scroll Snap Points", "#propdef-scroll-snap-stop", "scroll-snap-stop")}}</td>
<td>{{Spec2("CSS Scroll Snap Points")}}</td>
<td>初回定義</td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility" name="Browser_compatibility">ブラウザーの対応</h2>
<p>{{Compat("css.properties.scroll-snap-stop")}}</p>
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