1 files changed, 78 insertions, 0 deletions
diff --git a/files/ko/web/css/_colon_root/index.html b/files/ko/web/css/_colon_root/index.html
new file mode 100644
index 0000000000..5fb9ed0fd6
--- /dev/null
+++ b/files/ko/web/css/_colon_root/index.html
@@ -0,0 +1,78 @@
+---
+title: ':root'
+slug: 'Web/CSS/:root'
+tags:
+  - CSS
+  - Layout
+  - Pseudo-class
+  - Reference
+  - Selector
+  - Web
+translation_of: 'Web/CSS/:root'
+---
+<div>{{CSSRef}}</div>
+
+<p><a href="/ko/docs/Web/CSS">CSS</a> <strong><code>:root</code></strong> <a href="/ko/docs/Web/CSS/Pseudo-classes">의사 클래스</a>는 문서 트리의 루트 요소를 선택합니다 HTML의 루트 요소는 {{htmlelement("html")}} 요소이므로, <code>:root</code>의 <a href="/ko/docs/Web/CSS/Specificity">명시도</a>가 더 낮다는 점을 제외하면 <code>html</code> 선택자와 똑같습니다.</p>
+
+<pre class="brush: css no-line-numbers notranslate">/* 문서의 루트 요소 선택
+   HTML에서는 &lt;html&gt; */
+:root {
+  background: yellow;
+}</pre>
+
+<h2 id="구문">구문</h2>
+
+<pre class="syntaxbox notranslate">{{csssyntax}}</pre>
+
+<h2 id="예제">예제</h2>
+
+<h3 id="전역_CSS_변수_선언하기">전역 CSS 변수 선언하기</h3>
+
+<p><code>:root</code>는 전역 <a href="/ko/docs/Web/CSS/Using_CSS_custom_properties">CSS 변수</a> 선언에 유용하게 사용할 수 있습니다.</p>
+
+<pre class="brush: css notranslate">:root {
+  --main-color: hotpink;
+  --pane-padding: 5px 42px;
+}
+</pre>
+
+<h2 id="명세">명세</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName('CSS4 Selectors', '#root-pseudo', ':root')}}</td>
+   <td>{{Spec2('CSS4 Selectors')}}</td>
+   <td>No change.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('CSS3 Selectors', '#root-pseudo', ':root')}}</td>
+   <td>{{Spec2('CSS3 Selectors')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="브라우저_호환성">브라우저 호환성</h2>
+
+
+
+<p>{{Compat("css.selectors.root")}}</p>
+
+<h2 id="같이_보기">같이 보기</h2>
+
+<ul>
+ <li>{{htmlelement("html")}}</li>
+ <li>{{domxref("Document.rootElement")}}</li>
+ <li>{{domxref("Node.getRootNode()")}}</li>
+ <li>{{domxref("Node.rootNode")}}</li>
+ <li>{{domxref("Element.shadowRoot")}}</li>
+ <li>{{domxref("ShadowRoot")}}</li>
+</ul>