How to prevent the image from affecting the height of the parent element? What are the pure CSS solutions?

Cleverly control the image so that the parent element height is not affected

In web layout, it is often encountered that the parent container is highly vaguely supported by child elements (such as pictures with large aspect ratios). This article discusses how to use the pure CSS method to make the parent container height only affected by the text content, not by the image height.

Assuming that the parent container contains a picture and a paragraph of text, we want the parent container height to be determined only based on the text content. The reason why the parent element height is stretched is that the child elements (pictures and text) are not out of the document stream and the parent element height is not preset.

The main solutions are:

• Use absolute positioning: set the image to position: absolute; to get it out of the document stream. The image is still visually located in the parent container, but does not affect the height of the parent container. top , left , right , bottom attributes of the picture need to be adjusted according to the actual situation to control its position.

• Use background-image: If the image is allowed to be cropped or scaled, you can set the image as the background image of the parent container. Use background-size , background-position and other attributes to control the image display effect. But this method is not suitable for all situations, especially when the image needs to maintain its original scale and size.

In short, using absolute positioning is usually a more direct and flexible solution that can effectively control the image without affecting the height of the parent element, ensuring the neat and expected effect of the layout.

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