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@container: adapting a component to its own space
The condition may depend on the size of the container instead of the window.
Published22 Oct 2026
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Software, devices and technical concepts, explained clearly.
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Technology
@font-face: connecting a file to a font family and weight
A file for Regular is not automatically a real Bold.
Published22 Oct 2026
Technology
@layer: ordering style groups before specificity
Layers help control the cascade between libraries and own rules.
Published22 Oct 2026
Technology
@supports: checking CSS support rather than the final design
A positive response does not mean that the whole component is correct.
Published22 Oct 2026
Technology
301 and 308: two types of permanent redirect
The two statuses direct the client to a new address, but the behavior in method and query body is a significant difference. Proper inspection monitors the entire route.
Published22 Oct 2026
Technology
AbortController: ending unnecessary asynchronous work
The controller sends a signal to an operation that supports termination. The interface must distinguish the denied action from an unexpected error.
Published22 Oct 2026
Technology
accent-color: color of standard controls
Native checkbox can get color without full redrawing.
Published22 Oct 2026
Technology
appearance: none changes a control’s appearance
Removing the native drawing does not override the HTML behavior.
Published22 Oct 2026
Technology
Array.from(): a simple array of iterable source
Conversion is convenient when standard massive methods are needed.
Published22 Oct 2026
Technology
Array.isArray(): is the value array
typeof does not distinguish arrays from ordinary objects.
Published22 Oct 2026
Technology
aspect-ratio: height that follows width
The set ratio helps the block retain shape when at least one of its dimensions is automatic.
Published22 Oct 2026
Technology
async and await: readable sequence for asynchronous steps
wait waits for a result in the current async function. This syntax makes it easy to read, but does not eliminate the need to define dependencies and error behavior.
Published22 Oct 2026