CSS Margin refers to the space between HTML elements on a web page. Margin can be used to create space between elements and improve the readability and aesthetics of a web page.
Margin can be specified using the CSS margin property, which also accepts up to four values. The values can be specified in pixels, ems, rems, or percentages. The syntax for the margin property is as follows:
margin: top right bottom left;
Where “top”, “right”, “bottom”, and “left” refer to the margin values for each side of the element. If only one value is specified, it applies to all four sides. If two values are specified, the first applies to the top and bottom, and the second applies to the left and right. If three values are specified, the first applies to the top, the second applies to the left and right, and the third applies to the bottom.
For example, to add 10 pixels of margin to all sides of an element, you could use the following CSS rule:
Or, to add different margin values for each side of the element, you could use the following rule:
margin: 10px 20px 30px 40px;
This would add 10 pixels of margin to the top, 20 pixels to the right, 30 pixels to the bottom, and 40 pixels to the left of the element.
It’s important to note that margins collapse, which means that adjacent margins collapse into a single margin. This can affect the overall spacing of elements on a web page and should be taken into consideration when styling a page.