While CSS files apply style instructions to general areas such as the background and the main document text, some CSS template files specify certain tags that may not match the tags in your document.

To use custom CSS in Obsidian, go to Settings > Appearance, scroll down to CSS snippets, enable it, and then place your .css files in the snippets folder that appears. Obsidian will automatically ...

How Do I Create Multiple Fixed Backgrounds in My CSS File?. Cascading Style Sheets (CSS) level 3, also known as CSS3, introduces multiple background images support. You can list multiple ...