Tell us about your experience using the box-sizing property in CSS.

box-sizing: content-box - the default behavior, where width and height define the size of the content area, and padding and border are added to the total size of the element.

box-sizing: border-box - includes padding and border in the total size of the element. This makes size calculations more predictable, as the specified width and height include these paddings and borders.

Example:

.box {
  width: 100px;
  height: 100px;
  padding: 10px;
  border: 1px solid black;
}

.content-box {
  box-sizing: content-box; /* Total size: 100 + 10*2 + 1*2 = 122px */
}

.border-box {
  box-sizing: border-box; /* Total size: 100px */
}

I prefer to use box-sizing: border-box for all elements, usually through a global CSS rule:

*,
*::before,
*::after {
  box-sizing: border-box;
}

This simplifies layout and size calculations, especially when working with flexible layouts and responsive design. Using border-box makes it easy to set percentage or fixed widths without worrying that internal paddings or borders will "push" the element out of its intended space.