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The web is built out of rectangles. Every element, whether it's a heading, an image, or a button, is laid out as a box. But the way an element _looks

Drawing shapes with CSS is part party trick, part genuinely useful skill. Tooltips need arrows, badges need circles, ribbons need notches, and loadin

Decorators are everywhere in Python. @property, @dataclass, @app.get("/"), @pytest.fixture, @functools.cache: one line above a function or

Some data only matters while it's recent. The last few thousand log lines from a service, the latest status messages from a job runner, a stream of e

Accordions are everywhere: FAQ pages, product specs, settings panels, mobile navigation. For a long time, building one meant writing a click handler,

Replica sets protect you from a server dying. They don't protect you from a developer running deleteMany({}) against the wrong database, a migratio