Hello friends! Today I want to talk about a very useful and important concept in the world of CSS that might seem very simple but, when used correctly, can save your designs a lot of headaches. This feature is called box-sizing. Many of you who have web design experience might have had trouble adjusting the size of elements based on margins and paddings. This topic can cause the dimensions of your elements in web pages to be managed correctly.
The box-sizing feature is a solution that helps determine the width and height of a specific element, applied correctly, and prevents problems related to the sizing of unseen elements. When you use box-sizing: border-box; you can ensure that the sizes defined for an element include padding and borders as well.
By understanding box-sizing: border-box; there's no longer a need to worry about whether margins and paddings change the actual dimensions of your element. This can help in creating complex layouts of your designs and make it easier to estimate the actual sizes of elements more efficiently.
Assume you want to design a box and set a specific width for it. By using box-sizing: border-box;, the padding and borders will also be taken into account, which means the total width you set will not change.
Let's look at a practical example to explore this topic further:
div {\r\n box-sizing: border-box;\r\n width: 200px;\r\n padding: 20px;\r\n border: 5px solid #000;\r\n}In this code, by using box-sizing: border-box;, you ensure that the width of the whole element includes the padding and border as well, meaning it will remain 200px in total and won't change size.