![]() By default, the margin value of some HTML elements is set to zero, though some elements have specified margin values as their default, such as the through heading tags. The margin box is the fourth and final overlapping box that consists of transparent space outside of the border of an element.Note that the color, thickness, and style of the border can be adjusted. Increasing the size of an element’s border increases the distance between the padding box and the margin box. By default, the border value of most HTML elements is set to zero. ![]() The border box is the third overlapping box that surrounds the padding box.Increasing the size of an element’s padding increases the distance between the content box and the border box. By default, the padding of many HTML elements is set to zero. The padding box is the second overlapping box, which consists of a transparent space that surrounds the content box.When you set values for the width and height of an element, you are typically changing the width and height of the content box. It is also the only box in the box model whose value is typically not zero by default (if it contains content) in contrast, the padding, border, and margin of an element default to zero for many HTML elements (such as, , and elements) unless you specify otherwise. By default, its size is frequently set by the size of the content it contains. The content box is the innermost box where the text or image content is placed.The CSS Box ModelĪn HTML element can be understood as a series of four overlapping boxes: To follow this tutorial, make sure you have set up the necessary files and folders as instructed in a previous tutorial in this series How To Set Up You CSS and HTML Practice Project. This tutorial will begin by explaining each of the boxes of the CSS Box Model and then move on to a practical exercise on adjusting their values using CSS style rules. ![]() Understanding the CSS Box Model is helpful for adjusting the size of any of these parts of an HTML element and understanding how the size and position of elements is determined. In this tutorial, you will learn about the CSS Box Model, a model used to refer to the content, padding, border, and margins of an HTML element. ![]()
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