How can i make this?

[ariehen]

There’s a default (built-in) > [!info] Title callout already. So if you want to change that, you need to override it.

Have a look at Callouts - Obsidian Help and

Obsidian CSS Quick Guide

Obsidian CSS Quick Guide Hi friends! CSS in Obsidian can be confusing to get into, so this is a guide to get you started with information on the tools, methods, and some background knowledge! Let’s get started by looking at how you can look behind the curtain of Obsidian’s visuals. The Developer Console Obsidian is technically like a website. As such, you can view the source like any other browser. While you are inside the Obsidian window, you can press ctrl+shift+i to bring up the develope…