If there is one ring that binds the rest of web development together, it's probably the CSS Box Model. The box model is a set of convoluted, unintuitive rules that only a browser maker could love ...

it builds on the CSS3 Box model module and adds functionality to flow the content of an element into multiple columns. Essentially, multi-column layouts provide a degree of flexibility allowing ...

HTML and CSS use a box model, which means that page elements include margins, padding, background colors and, optionally, decorative borders. Open your HTML Web page in a text editor such as Notepad.