Hi @gdaily, welcome to the Webflow forum, I’m Abi Rana and I hope I can help you with this issue.
Regarding the issue, there 2 main reasons; 1 because you are applying position: sticky to the nav and 2 you logo is sticking out that is because you’ve applied a fixed height for the menu. Please check the screenshot.
And I also have 2 solutions for you. 1st remove position: sticky because you already have position: fixed applied to it and does the same thing in your condition. 2nd and main thing you should do is that instead of applying a fixed height fix the logo size because depending on the situation content or the logo can change, so have a fixed height is not a good thing.