JetBrains Rider brings powerful editing support for CSS and related technologies. Among others this support includes:
Validation and syntax highlighting.
Code completion (Ctrl+Space).
Indentation (Ctrl+Alt+I, Ctrl+Alt+Enter).
Formatting (Ctrl+Alt+Enter) according to the code style.
Intention actions (Alt+Enter).
Viewing code structure (Ctrl+Alt+7).
Navigation in the source code (F12).
Integrated documentation (Ctrl+Shift+F1).
Search for usages (Shift+F12).
Commenting and uncommenting lines (Ctrl+Alt+/, Ctrl+Shift+/).
Unwrapping and removing tags (Ctrl+Shift+Delete).
Compilation into CSS.
JetBrains Rider parses Web contents files according to the CSS 3.0 specification. The most common selectors are supported: universal selector
*, type selectors
.a, descendant selectors
.a.b, child selectors
.a .b, ID selectors
#b, pseudo-classes and class selectors