To handle content overflow, you can use the overflow property of CSS, set to hidden to hide the content beyond it; if you need to display the scroll bar, use overflow: auto or overflow-y: scroll; text-overflow: ellipsis can be used for single-line text overflow. Specific methods include: 1. Use overflow: hidden to apply to areas with fixed heights and no scrolling; 2. Combine max-height and overflow-y: auto to achieve content scrolling; 3. Combine white-space and text-overflow to achieve single-line omission; 4. Combine multiple attributes to improve flexibility, such as keeping spaces and line-breaking while avoiding the word being too long to open the container. These methods are particularly common in responsive layouts and dynamic content presentation, but attention should be paid to boundary conditions to ensure compatibility.

When the content exceeds the container, it is actually quite common to use CSS to process it, especially when doing responsive layouts or dynamic content displays. The key is to select the appropriate attributes and methods based on the specific scenario.

How to make overflow content hidden and not displayed

The most common method is to use overflow attribute. Setting it to hidden can directly "hide" the excess part, which is suitable for situations where users do not want to see more content, such as an introduction or title.

 .box {
  overflow: hidden;
}

This method is simple and effective, but one thing to note: if the content inside is highly uncertain or performs inconsistently on different devices, some of the content may be truncated and inaccessible. Therefore, it is suitable for use in areas with fixed heights and no scrolling viewing.

Want users to see the full view? Add a scrollbar

If you want users to see everything but don't want to disrupt the layout, you can consider using settings like overflow: auto or overflow-y: scroll .

 .scroll-box {
  max-height: 200px;
  overflow-y: auto;
}

This way, the browser will automatically appear when the content exceeds the set height. In actual use, it is recommended to use it with max-height , otherwise the scroll bar may not take effect. This practice is often used in pop-up content, comment list, drop-down menu and other scenarios.

What should I do if the text is too long? Use text-overflow to process it concisely

If the single line text exceeds the width of the container and you don’t want to wrap the line or open the layout, you can use text-overflow: ellipsis to add an ellipsis.

 .title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

Note that this method is only valid for single lines. If multiple lines are needed to be omitted, it must be implemented in combination with -webkit-line-clamp or JS. But most of the time, a single line is enough, especially in the navigation bar and card title.

Tips: More flexible in combination

Sometimes a single attribute can't solve the problem, and you can use several together:

• overflow: hidden text-overflow: ellipsis : controls single-line text overflow
• max-height overflow-y: auto : limits height and allows scrolling
• white-space: pre-wrap overflow-wrap: break-word : keep spaces and line breaks while avoiding the word being too long to spread the container

Basically, these common methods of handling are simple. Although they seem simple, problems will arise if you are not careful in actual projects, especially in dynamic content and responsive design. You need to pay more attention to the boundary situation.

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