The CSS allows you to specify how wide and tall the box is, and you can apply the style to any boxes you choose. Start your text editor program and open the document that has the checkboxes.

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.

Key Takeaways Start with basic concepts like selectors, properties, and box model before moving to layouts.Use online tools ...