Steps to activate overflow on `react-bootstrap` NavDropdown

I'm having a bit of trouble with using react-bootstrap's NavDropdown in my NavBar to display a list of data. Sometimes, the list extends beyond the view and gets cut off at the bottom. I want to add overflow: auto to the list to make it scrollable, but I haven't found a way to do it without affecting react-bootstrap's styling. Trying to wrap the NavDropdown or its items in a styled div disrupts the styling, and directly styling the NavDropdown via className or style also causes issues. Has anyone encountered this problem before and found a solution?

The code snippet I am working with looks like this:

<NavBar>
  <NavBar.Collapse>
    <Nav>
      <NavDropdown>
        lots of <MenuItem />
      </NavDropdown>
    </Nav>
  </NavBar.Collapse>
</NavBar>
cssreactjsreact-bootstrapcss-modules

Answer №1

To effectively style React elements, it's crucial to analyze the underlying html/css structure rather than just focusing on the components themselves. In this scenario, we must target ul.dropdown-menu within the <NavBar> component. This can be achieved by assigning a className to that specific element and applying the necessary styles:

component

<NavBar className="navBar">
...

stylesheet

.navBar ul.dropdown-menu {
  max-height: 90vh;
  overflow-y: auto;
}

The value for max-height can be adjusted as needed to suit the user interface requirements.

It's important to note that when utilizing css-modules or similar libraries, due to automatic namespacing, these styles should be included in a base stylesheet and not one that will be imported into the component and namespaced.

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