... means the stated width value is the total width of the content, the padding, and the border—in other words, the entire box (without the margin). To illustrate this, let’s return to the previous ... value;} The theory is that this future-proofs the code; when the property is fully implemented in the browsers, you don’t need to go back and add the prop-erty to your stylesheets. I used to agree ... parent site, images have to be resized to better fit small screens, and a script has to be created to detect whether a mobile browser is being used and to redirect to the mobile site accordingly....