Reply To: Menu doesn't open any more

[Tom]

Looks like you have a CSS error in your style.css file.

Try replacing the content of your style.css file with a fresh version: https://themes.svn.wordpress.org/generatepress/1.3.39/style.css

If you add custom CSS to your style.css, you should be using these instructions instead: https://generatepress.com/knowledgebase/adding-css/