How to solve the problem of CSS not scrolling

In web page production, many times we need to scroll the content area so that the content can be displayed completely in a limited space. In the actual development process, you may encounter some situations that cause the content in the web page to fail to scroll. So, what causes CSS not to scroll? How to solve the problem of CSS not scrolling? This article will give you a detailed introduction.

1. Reasons why CSS does not scroll

1. No height is set

In CSS, if we want a container to be scrollable, then we The scrolling effect must be achieved by setting the height (height) and overflow properties (overflow:hidden/auto/scroll) of the container. If the height attribute of the container is not set, the content within the container cannot be scrolled no matter what overflow value is set.

2. Overflow attribute setting error

When the height of the container is set correctly, if we want the content of the container to be scrollable, we can set the overflow attribute of the container (overflow: hidden/auto/scroll) to achieve. However, if we set the wrong overflow property, it may cause the content to not scroll.

3. The content does not exceed the height of the container

When a container is set to scroll, but the content in the container does not exceed the height of the container, the content will not scroll.

4. Container layout issues

If we want the content in a container to be scrollable, then the content in the container must be surrounded by the parent container. If we set the positioning attribute or width attribute of the parent container, it may cause the child container to overflow the parent container, so that the content in the container cannot be scrolled.

2. Methods to solve CSS non-scrolling problem

1. Set container height and overflow properties

As mentioned above, if you want a container to be scrollable, We need to do this by setting the height and overflow properties of the container. When setting the height, we need to pay attention to ensure that the height of the container is greater than or equal to the height of its internal content. When setting the overflow attribute, we need to choose the appropriate attribute value according to the actual situation. For example, if we want the content in the container to be fully displayed, we can set overflow:auto; if we want the content in the container to always be scrollable, we can set overflow:scroll.

2. Set the height and overflow properties of subcontainers

Sometimes, we will set scrolling in the subcontainers of the container. At this point, we need to make sure that the height and overflow properties of the subcontainer are set correctly. For example, if there is a scroll event nested in the page, we need to set the height and overflow properties of the event to ensure that the content inside it can be scrolled.

3. Check the layout of the container and sub-containers

If the content in the container still cannot be scrolled, then we need to check the layout of the container and sub-containers. We need to ensure that the height and position of the child container are within the scope of the parent container.

4. Check whether the CSS file is loaded successfully

Finally, we also need to check whether the CSS file is loaded correctly. If the CSS file is not loaded correctly, it may cause the browser to fail to parse the style correctly, causing scrolling to fail.

Summary

This article introduces the reasons why CSS does not scroll and how to solve it. Whether in web page production or website development process, scrolling is a very common requirement. By correctly setting the height and overflow properties of the container, we can easily achieve scrolling of the content. During the actual development process, we also need to pay more attention to ensure that the layout of the container and sub-containers is correct and the CSS files are loaded correctly to avoid unnecessary trouble.

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