[筆記][關鍵字]側欄選單(文章段落標題)與內文文章段落標題連動

 中文關鍵字 (Chinese Keywords):

• 固定側邊欄 (Fixed sidebar)
• 黏性側邊欄 (Sticky sidebar)
• 滾動時固定 (Fixed on scroll)
• 側欄跟隨滾動 (Sidebar follow scroll)
• CSS position: sticky 側邊欄
• JavaScript 側邊欄滾動
• 頁面標題跟隨效果 (Page title follow effect)
• 動態側邊欄 (Dynamic sidebar)

英文關鍵字 (English Keywords):

• Sticky sidebar
• Fixed sidebar on scroll
• Sidebar that follows page title
• CSS position: sticky sidebar
• JavaScript scroll-triggered sidebar
• Dynamic sidebar positioning
• Scroll-aware sidebar
• Affix sidebar (often used in framework contexts like Bootstrap)