diff --git a/packages/tempo-md/src/index.ts b/packages/tempo-md/src/index.ts
index d3c7351..38b8352 100644
--- a/packages/tempo-md/src/index.ts
+++ b/packages/tempo-md/src/index.ts
@@ -2,5 +2,6 @@ export * from './lib/code-block';
 export * from './lib/emoji';
 export * from './lib/frontmatter';
 export * from './lib/markdown';
+export * from './lib/details';
 export { default as supportedLanguages } from './lib/data/supported-languages';
 export { default as supportedEmojis } from './lib/data/emojis';
diff --git a/packages/tempo-md/src/lib/__tests__/details.test.ts b/packages/tempo-md/src/lib/__tests__/details.test.ts
new file mode 100644
index 0000000..265020d
--- /dev/null
+++ b/packages/tempo-md/src/lib/__tests__/details.test.ts
@@ -0,0 +1,17 @@
+import { describe, expect, it } from 'vitest';
+import { details } from '../details';
+
+describe('details', () => {
+  it('should return a string', () => {
+    expect(details({ summary: 'Click me', content: 'This is the content of the details element.' })).toBe(
+      `
+<details>
+  <summary>Click me</summary>
+
+  This is the content of the details element.
+
+</details>
+  `.trim()
+    );
+  });
+});
\ No newline at end of file
diff --git a/packages/tempo-md/src/lib/details.ts b/packages/tempo-md/src/lib/details.ts
new file mode 100644
index 0000000..c130fbf
--- /dev/null
+++ b/packages/tempo-md/src/lib/details.ts
@@ -0,0 +1,29 @@
+export interface DetailsConfig {
+  summary: string;
+  content: string;
+}
+
+/**
+ * Creates a details element.
+ *
+ * @example
+ * ```ts
+ * const details = details({
+ *  summary: 'Click me',
+ *  content: 'This is the content of the details element.'
+ * });
+ * ```
+ *
+ * @param config - The configuration for the details element.
+ * @returns The details element as a string.
+ */
+export function details(config: DetailsConfig): string {
+  return `
+<details>
+  <summary>${config.summary}</summary>
+
+  ${config.content}
+
+</details>
+  `.trim();
+}
diff --git a/packages/tempo-md/src/lib/index.ts b/packages/tempo-md/src/lib/index.ts
index 7b9bef8..fe456c9 100644
--- a/packages/tempo-md/src/lib/index.ts
+++ b/packages/tempo-md/src/lib/index.ts
@@ -6,4 +6,5 @@ export {
 } from './emoji';
 export { default as supportedLanguages } from './data/supported-languages';
 export { default as supportedEmojis } from './data/emojis';
+export { details, type DetailsConfig } from './details';
 export * as default from './markdown';
diff --git a/packages/tempo/src/lib/__tests__/tempo-document.test.ts b/packages/tempo/src/lib/__tests__/tempo-document.test.ts
index 191cf4e..53383f6 100644
--- a/packages/tempo/src/lib/__tests__/tempo-document.test.ts
+++ b/packages/tempo/src/lib/__tests__/tempo-document.test.ts
@@ -116,6 +116,15 @@ describe('Text Elements', () => {
 });
 
 describe('Special Elements', () => {
+
+  it('should add a details element', () => {
+    const document = new TempoDocument().details({
+      summary: 'Hello World!',
+      content: ['Hello 2 World!', 'Hello 3 World!'],
+    });
+    expect(document.toJSON().nodes).toEqual([]);
+  }); 
+
   it('should add a table', () => {
     const document = new TempoDocument().table([
       ['Hello World!', 'Hello 2 World!'],
diff --git a/packages/tempo/src/lib/tempo-document.ts b/packages/tempo/src/lib/tempo-document.ts
index effa51f..beab703 100644
--- a/packages/tempo/src/lib/tempo-document.ts
+++ b/packages/tempo/src/lib/tempo-document.ts
@@ -34,7 +34,8 @@ export type DocumentNodeType =
   | 'break'
   | 'numberList'
   | 'bulletList'
-  | 'alert';
+  | 'alert'
+  | 'details';
 
 interface BaseDocumentNode<N extends unknown[], D extends object = object> {
   type: DocumentNodeType;
@@ -58,6 +59,27 @@ export interface ParagraphNode extends BaseDocumentNode<TempoTextNode[]> {
   type: 'paragraph';
 }
 
+interface DetailsSummaryNode {
+  type: 'details-summary';
+  data: {
+    nodes: TempoTextNode[];
+  };
+  computed: string;
+}
+
+interface DetailsContentNode {
+  type: 'details-content';
+  data: {
+    nodes: TempoDocumentNode[];
+  };
+  computed: string;
+}
+
+export interface DetailsNode
+  extends BaseDocumentNode<[DetailsSummaryNode, DetailsContentNode]> {
+  type: 'details';
+}
+
 interface TableRow<T extends 'row' | 'header'> {
   type: T;
   order: T extends 'row' ? number : undefined;
@@ -144,7 +166,8 @@ export type TempoDocumentNode =
   | BreakNode
   | NumberListNode
   | BulletListNode
-  | AlertNode;
+  | AlertNode
+  | DetailsNode;
 
 export type TempoDocumentMetadata = md.Frontmatter | null;
 
@@ -406,6 +429,62 @@ export class TempoDocument {
   |------------------
   */
 
+  /**
+   * Append a details element to the document.
+   *
+   * @example
+   * ```ts
+   * const doc = tempo()
+   *  .details({
+   *    summary: 'Click me',
+   *    content: 'This is the content of the details element.'
+   *  })
+   *  .toString();
+   * // Output: <details>
+   * //   <summary>Click me</summary>
+   * //   This is the content of the details element.
+   * // </details>
+   * ```
+   *
+   * @param config - The configuration for the details element.
+   * @returns The TempoDocument instance with the details element appended.
+   */
+  public details({
+    summary,
+    content,
+  }: {
+    summary: TempoTextInput;
+    content: Array<TempoTextInput | TempoDocumentNode>;
+  }): this {
+    this.nodes.push({
+      type: 'details',
+      data: {
+        nodes: [
+          {
+            type: 'details-summary',
+            data: {
+              nodes: computeNodes(summary),
+            },
+            computed: md.paragraph(computeText(summary)),
+          },
+          {
+            type: 'details-content',
+            data: {
+              nodes: content.map(computeNodes),
+            },
+            computed: content.map((node) => node.computed).join('\n'),
+          },
+        ],
+      },
+      computed: md.details({
+        summary: md.paragraph(computeText(summary)),
+        content: transformToMarkdown(content),
+      }),
+    });
+
+    return this;
+  }
+
   /**
    * Append a table to the document.
    *
@@ -736,11 +815,7 @@ export class TempoDocument {
    * @returns A string representation of the document, that can be used for rendering.
    */
   public toString(): string {
-    const result = this.nodes
-      .map((section) => section.computed)
-      .join('\n\n')
-      .trim()
-      .concat('\n');
+    const result = transformToMarkdown(this.nodes);
 
     if (this.metadata) {
       return md.frontmatter(this.metadata).concat('\n', result);
@@ -794,3 +869,11 @@ export class TempoDocument {
     };
   }
 }
+
+function transformToMarkdown(nodes: TempoDocumentNode[]): string {
+  return nodes
+    .map((section) => section.computed)
+    .join('\n\n')
+    .trim()
+    .concat('\n');
+}