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.

See the impact of margins and padding when using CSS class 'red block' or 'grey block' within a column control component. Learn how margin and padding impact CSS class 'block col-' which allows you to ...

To remove the body margin when the page is printed, you must use a CSS script. This script is used only when the page is printed so the margin is still displayed when people visit the page.