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CSS Overflow

The overflow property determines what happens when content exceeds an element’s box. Values include visible, hidden, scroll, and auto. Controlling overflow is essential for maintaining tidy layouts and preventing content spill beyond boundaries.

Key Topics

  • Hidden vs. Scroll
  • Auto Overflow
  • Clipping Content

Basic Usage

overflow: hidden; clips content that doesn’t fit, while overflow: scroll; or auto; adds scrollbars as needed.

.box {
    width: 200px;
    height: 100px;
    overflow: auto;
    border: 1px solid #000;
}

Explanation: When content inside .box is larger than 200px by 100px, scrollbars appear, allowing users to access hidden parts without breaking the layout.

Use Cases

Overflow handling is crucial in responsive layouts, modal windows, or fixed-size components. Proper overflow management ensures a polished and user-friendly interface.

Key Takeaways

  • Control: Decide if excess content is visible, hidden, or scrollable.
  • User Experience: Scrollbars let users access all content in constrained areas.
  • Cleanup: Hidden overflow prevents layout breakage or awkward text wrapping.
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