Problems with menu items.

Hi. This is not the problem of the template, but your mistake. You cannot put in the box more than it can fit and to expect that this will not get out on the smaller screen width.

If you do not have CSS skills to solve this in the aspect of responsiveness for different screens, use the number of menu items and the size of the words that are shown in the demo.

Use responsive view in your browser dev tools to check the site on different screen sizes, to understand what is happening