How to use overflow in css

The overflow attribute in CSS is used to control the processing method when the element content exceeds the boundary. The possible values ​​include visible, hidden, scroll, and auto. overflow-x and overflow-y specifically control horizontal and vertical scrolling. It can be used to create scrollable lists, control how images and videos are displayed, and hide content beyond a specific area.

Usage of overflow in CSS

The overflow property is used to control what happens when the content of an element exceeds its boundaries. overflow. It can take the following values:

Visible

Default value. It allows an element's content to extend beyond its bounds, and the overflowed content remains visible.

Hide (hidden)

Hide the content of an element beyond its boundaries.

Scroll

Creates a scroll bar inside an element, allowing the user to view the element's content beyond its boundaries.

Auto (auto)

Display scroll bars only when needed. If the element content exceeds its bounds, it will automatically create scroll bars, otherwise it will not create them.

overflow-x and overflow-y

These properties specifically control horizontal and vertical scrolling. overflow-x controls horizontal overflow, and overflow-y controls vertical overflow. They can be used individually to provide finer control.

Example:

<code class="css">/* 隐藏元素顶部和底部超过其边界的文本 */
div {
  overflow: hidden;
}

/* 在元素内部创建垂直卷动条 */
ul {
  overflow-y: scroll;
}

/* 只有在水平溢出时才显示水平卷动条 */
table {
  overflow-x: auto;
}</code>

Application scenario:

The overflow attribute is widely used in various web design scenarios, such as:

• Create a scrollable list or text box
• Control how an image or video is displayed in an element
• Hide element content that exceeds a specific area
• Show or hide scroll bars as needed

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