Optimizing your CSS
You can inspect and optimize your CSS stylesheets by removing duplicate style attributes.
IntelliJ IDEA validates CSS stylesheet on-the-fly as you open it and highlights duplicate CSS attributes. Description tooltip appears when you move mouse over them.
Click the highlighted attribute to pop up Quick Fix that lets you instantly correct the problem.
Of course that’s not all CSS support that IntelliJ IDEA provides. To learn more, see full description of IntelliJ IDEA’s HTML Editor with CSS Support.