CSS Helper is a lightweight extension that allows you to learn the CSS properties of a particular element upon hovering above it without having to open the console.
You can learn more about the font family, size, color, line spacing etc. and more.
Usage:
1. To activate the helper on a particular tab, click on the helper icon once.
2. To deactivate, click once again.
谷歌浏览器、其他Chromium内核的浏览器