Explains how Flask’s before_request and after_request decorators act as lightweight middleware to inject code at key points in the request–response cycle: pre-request for defaults, auth checks, and DB prep; post-request for logging, validation, caching, and optimization. Includes examples and best practices—keep handlers small, limit dependencies, and use caching judiciously—to build flexible, performant apps.
Comprehensive guide to CSS pseudo-elements, focusing on ::before and ::after to inject content around elements without extra markup. Learn basics and advanced uses—positioned labels, custom shapes (triangles/arrows), image masks, and cursor effects—plus tips on performance, always setting content, and combining transforms/gradients to build richer, flexible layouts.
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