New Thunderbird logo, 4 levels of grids, Intel One Mono, Introducing the popover API

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The brand new Thunderbird logo - After nearly 20 years, we are thrilled to share a completely redesigned Thunderbird logo that honors our history and vital connection to Mozilla. - Ryan Sipes / filed under Logo Design

4 levels of grids for web designers - Grids are a fundamental component of any design practice, and especially so when designing things for screens. There are (at least) four levels of grid use in interaction design. - Christopher Butler / filed under UI Design

Intel One Mono - Introducing Intel One Mono, an expressive monospaced font family that's built with clarity, legibility, and the needs of developers in mind. - Intel / filed under Typography

Introducing the popover API - Learn how to build tooltips, menus, and more with the new popover API. - Una Kravets / filed under HTML & CSS