I've created a website, here is the link for your reference http://britishcollege-yangon.webflow.io/
It works well. But after testing on different devices, I find an issue on navigation menu. When I shrink the browser window, and click the navigation icon, the drop down menu works well, but if I view the website on tablet or mobile phone, the navigation menu doesn't work, the navigation icon seems like un-clickable. After clicking the icon, the drop down menu doesn't appear.
It would be appreciated if you could help me to sort it out.
Thank you very much in advance.