# Feature Showcase: Preview Cascading Style Sheets

Use Komodo's browser preview to view the effects of CSS changes as you edit.

Before you start: Open a CSS file.

Set the web and browser preference to Preview in Komodo tab, other tab group.
Click the Web Preview button and specify a file which uses the CSS file.
The preview displays the CSS file via the specified HTML file.
Alter the CSS file. When the changes are saved, the preview is automatically updated.