What is the best way to ensure that the width of dropdown menu items corresponds precisely to the width of the content

I have implemented the Reactstrap drop-down menu:

import React from "react";
import {
  Dropdown,
  DropdownToggle,
  DropdownMenu,
  DropdownItem,
} from "reactstrap";

export default class DropDownTest extends React.Component {
  constructor(props) {
    super(props);

    this.toggle = this.toggle.bind(this);
    this.state = {
      dropdownOpen: false,
    };
  }

  toggle() {
    this.setState((prevState) => ({
      dropdownOpen: !prevState.dropdownOpen,
    }));
  }

  render() {
    return (
      <Dropdown isOpen={this.state.dropdownOpen} toggle={this.toggle}>
        <DropdownToggle caret>test</DropdownToggle>
        <DropdownMenu>
          <DropdownItem>A</DropdownItem>
          <DropdownItem>A</DropdownItem>
          <DropdownItem>A</DropdownItem>
          <DropdownItem>A</DropdownItem>
        </DropdownMenu>
      </Dropdown>
    );
  }
}

The issue I am facing is that the width of the DropdownItem is too large for what I want to display (the letter A):
https://i.sstatic.net/PX2TO.png

I aim to make the width of the DropdownItem equal to the required width by the inner element, in this case the letter A.

Upon inspecting the dropdown menu, I found the following structure:

   <div
          tabindex="-1"
          role="menu"
          aria-hidden="false"
          class="dropdown-menu show"
          style="position: absolute; will-change: transform; top: 0px; left: 0px; transform: translate3d(515px, 41px, 0px);"
          x-placement="bottom-start"
        >
          <button
            type="button"
            tabindex="0"
            role="menuitem"
            class="dropdown-item"
          >
            A
          </button>
          <button
            type="button"
            tabindex="0"
            role="menuitem"
            class="dropdown-item"
          >
            A
          </button>
          <button
            type="button"
            tabindex="0"
            role="menuitem"
            class="dropdown-item"
          >
            A
          </button>
          <button
            type="button"
            tabindex="0"
            role="menuitem"
            class="dropdown-item"
          >
            A
          </button>
        </div>

These are the relevant CSS classes:

.dropdown-item {
  display: block;
  width: 100%;
  padding: 0.25rem 1.5rem;
  clear: both;
  font-weight: 400;
  color: #212529;
  text-align: inherit;
  white-space: nowrap;
  background-color: transparent;
  border: 0;
}

Additionally, I believe the following class is defined in the template being used:

.dropdown-menu .dropdown-item {
  color: #66615b;
  font-size: 14px;
  padding: 10px 45px 10px 15px;
  clear: both;
  white-space: nowrap;
  width: 100%;
  display: block;
}

https://i.sstatic.net/1ii1F.png

I attempted to remove the padding:

  <DropdownItem className="p-0" >A</DropdownItem>
  <DropdownItem className="p-0" >A</DropdownItem>
  <DropdownItem className="p-0">A</DropdownItem>
  <DropdownItem className="p-0">A</DropdownItem>

However, this did not achieve the desired result as expected.
Any suggestions on how I can accomplish my objective?

Answer №1

After inspecting the elements in my browser's document inspector, I discovered that Bootstrap sets a minimum width of 10rem on dropdowns (not dropdown items, which should remain 100% width). Interestingly, dropdowns do take the width of their content over that 10rem minimum. It seems like the Bootstrap team decided that skinny dropdowns just didn't look right.

If you want to override this default behavior, you can implement a custom CSS solution with a specific class. Make sure to include the dropdown-menu class in your selector for higher precedence.

.dropdown-menu.min-width-0 {
  min-width: 0;
}

This custom styling would likely be applied to the DropdownMenu component. In the ReactStrap documentation for that component, you'll find the className property mentioned.

<DropdownMenu className="min-width-0">

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