In your code you have done some impressive amount of work. I haven't gone through the whole code, instead I just added the following css: .navbar-nav ... ... <看更多>

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Text and Non-nav links#. Loose text and links can be wrapped Navbar.Text in order to correctly align it vertically. Navbar ... ... <看更多>

When visiting a site using a mobile device with a navbar with ... down the the links at the bottom of the navbar as you can in Bootstrap 3. ... <看更多>

I have a custom bootstrap 4 theme I am building out in wordpress. The drop down mobile menu does not work when the hamburger menu is pressed ... ... <看更多>