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Something related to flex new div and give full width - HTML & CSS - SitePoint Forums | Web Development & Design Community
A Complete Guide to Flexbox | CSS-Tricks - CSS-Tricks
A Complete Guide to Flexbox | CSS-Tricks - CSS-Tricks
Introduction to CSS Flexbox - GeeksforGeeks
css div box responsive using flexbox | css flexbox tutorial - YouTube
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CSS Flexbox: A Complete Guide
