Cobalt 27 supports all features that are part of the Blink Supported Features.
Cobalt Support Quick Reference
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Last updated 2026-06-30 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-06-30 UTC."],[],["This content outlines a set of web development technologies, including HTML elements like `\u003ca\u003e`, `\u003cvideo\u003e`, and `\u003cdiv\u003e`, and CSS properties such as `display`, `border`, and `flex`. It details CSS selectors for styling and JavaScript Web APIs like `Fetch`, `DOM4`, and `Web Storage API` for dynamic functionality. It lists protocols (HTTPS, QUIC) and media formats (FLV, MP4, JPEG) used for web content. Security standards like \"Content Security Policy Level 2\" are also mentioned.\n"]]