diff --git a/cmd/web.go b/cmd/web.go
index 0208f60..60626b1 100644
--- a/cmd/web.go
+++ b/cmd/web.go
@@ -32,7 +32,7 @@ func init() {
 	webCmd.Flags().StringSliceVarP(&urls, "urls", "u", []string{}, "URLs of the webpages to scrape (comma-separated)")
 	webCmd.Flags().StringVarP(&outputFile, "output", "o", "", "Output Markdown file (default: rollup-web-<timestamp>.md)")
 	webCmd.Flags().IntVarP(&depth, "depth", "d", 0, "Depth of link traversal (default: 0, only scrape the given URLs)")
-	webCmd.Flags().StringVar(&cssSelector, "css", "", "CSS selector to extract specific content")
+	webCmd.Flags().StringVar(&cssSelector, "css", "", "CSS selector to extract specific content (use '-' to exclude elements, e.g., 'main - .ads - .navigation')")
 }
 
 func runWeb(cmd *cobra.Command, args []string) error {
diff --git a/internal/scraper/scraper.go b/internal/scraper/scraper.go
index 1fb2498..1702f9e 100644
--- a/internal/scraper/scraper.go
+++ b/internal/scraper/scraper.go
@@ -273,7 +273,7 @@ func ExtractContentWithCSS(content, selector string) (string, error) {
 
 // parseSelectors splits the CSS selector string into include and exclude parts
 func parseSelectors(selector string) (string, []string) {
-	parts := strings.Split(selector, "!")
+	parts := strings.Split(selector, "-")
 	includeSelector := strings.TrimSpace(parts[0])
 	var excludeSelectors []string
 	for _, part := range parts[1:] {