Modern Web Design with HTML5, CSS3, and JavaScript - Adding a Cascading Style Sheets (CSS) Grid

The video tutorial covers the process of styling a webpage using CSS. It begins with applying box sizing to all elements to ensure padding is included in element sizes. The tutorial then moves on to styling a wrapper element with borders and background colors. It explains how to define grid areas for layout, using CSS grid to create a responsive design. The video demonstrates setting up grid template columns and rows, emphasizing a mobile-first approach. Finally, it shows how to adjust the grid layout for different screen sizes, ensuring a fully responsive design.

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