The scroll-margin CSS property is used to control the amount of space or margin that is reserved around an in-flow block-level element when it is the target of a scroll operation. It allows you to specify the spacing between the scrolling container’s edge and the target element, providing better control over the scrolling experience.

The scroll-margin property accepts length values, such as pixels or percentages, and can be set for each side individually or using shorthand notation.

Here’s an example:

.target-element {
  scroll-margin: 20px;

In this example, the .target-element class sets the scroll-margin property to 20px. When this element becomes the target of a scroll operation within its container, a margin of 20 pixels will be reserved around it. This ensures that there is sufficient space around the element, preventing it from being positioned too close to the edge of the container.

You can also use shorthand notation to set different scroll margins for each side:

.target-element {
  scroll-margin: 10px 20px 15px 30px;

In this example, the .target-element class sets the scroll-margin property using shorthand notation. The values 10px, 20px, 15px, and 30px represent the top, right, bottom, and left margins, respectively.

The scroll-margin property is particularly useful when you want to ensure a specific amount of spacing around a target element during scrolling, preventing it from being obscured or too close to the container’s edge. It provides fine-tuned control over the scroll behavior, improving the overall user experience.