Building an expansive navigation menu with react-bootstrap

My current project involves creating a mega menu. Although I successfully made a responsive navbar, the challenge now is to implement a dropdown panel with 100% width. I've tried various approaches but haven't found one that works.

Note: The other Nav.Link elements also need to follow the same style as NavDropdown.

import React from "react";
import {
  Nav,
  Navbar,
  NavDropdown,
  Col,
  Row,
  Container,
  Dropdown,
} from "react-bootstrap";
// more code follows...

CSS Snippet:

.nav-link {
  font-size: 0.95rem;
}

#basic-nav-dropdown {
  font-size: 0.95rem;
}
// more CSS rules...

@media only screen and (min-width: 600px) {
  .eventsNav {
    position: absolute;
    left: -100px;
    background: #eaafc8 !important;
    background: -webkit-linear-gradient(to right, #eaafc8, #654ea3) !important;
    width: 44em;
    padding-bottom: 1em;
  }
}

Expected Result: https://i.sstatic.net/W3oOA.png

Current Implementation: https://i.sstatic.net/Rb6Hv.png

Thank you and best regards!

javascriptcssreactjsbootstrap-5react-bootstrap

Answer №1

A Nav.Dropdown applies position: relative; to the nav-item (Nav.Link). The dropdown-menu, having position: absolute;, will then be positioned in relation to the nav-item.

For best results:

.nav-item.dropdown {
  position: inherit;
}

.dropdown-menu {
  width: 100%;
  transform: translate(0px, 70px); /* adjust values based on your design */
}

It's important to use precise CSS selectors to avoid affecting other dropdowns on the page.

The use of transform is necessary due to the differences in how React-Bootstrap handles dropdown positioning compared to Bootstrap. Experiment with the dropdown-menu position using Dev Tools before finalizing changes in your stylesheet.

Adding position: relative; to the nav element can also be considered to position the dropdown-menu below it, depending on your layout.

You can see a demonstration in Bootstrap (5.3) here: JSFiddle. Simply remove the .dropdown class from the nav-item and set width: 100%; on the dropdown-menu.

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