The document discusses Magento 2's front-end architecture and how to create themes. It covers Magento 2's goals of improving performance, making upgrades easier, and using high-quality code. It also discusses how consumers use multiple devices for purchases and how to get started with Magento 2 on GitHub. The document then provides instructions on how to create a theme by defining its configuration file and structure, working with CSS by extending and overriding styles, manipulating layout using XML, and overriding templates.
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