Icarus’ default theme configuration file is _config.icarus.yml, in the root directory of your site, next to the site configuration file _config.yml. It defines the global layout and style settings of the theme and controls external features such as plugins and widgets. This article details the general configurations of the theme. It also explains what configuration files are used and how Icarus generates and validates these configurations.

Choosing the right CDN providers can significantly reduce the page loading time of your viewers. Icarus lets you pick among several built-in CDN provider options for serving third-party libraries and asset files used by Icarus.

Icarus的默认主题配置文件为_config.icarus.yml，它位于站点根目录中，与站点配置文件_config.yml放在一起。 此文件定义了站点全局的布局与样式设置，同时也控制了例如插件与挂件等外部功能的配置。 本文详细介绍了本主题的一般配置，并且解释了Icarus使用哪些配置文件，以及它是如何生成并验证这些配置的。

选择合适的CDN提供商可以大幅度减少网站访客的网页加载时间。 Icarus为你提供了几种内置的CDN提供商来承载Icarus所用到的第三方库和资源文件的加载。