In Bootstrap 4, NavBar is an essential component for menu purposes. NavBar contains so many items like text, link text, disable the link, dropdown buttons, forms, etc. To make dropdown sub-items to full-width can be carried by using either CSS properties or by using default utilities of Bootstrap 4. The following approaches will explain clearly:
- In Bootstrap 4, full width dropdown in Navbar might be possible by adding CSS properties either internally or externally based on conveniences. Focus on class dropdown and dropdown-menu only.
- First focus dropdown which is parent class of dropdown-menu then make it as static in position as follows:
- Now, make top margin of dropdown-menu as zero pixel and add width to 100%.
- Then add box shadow to highlight the dropdown-menu (decorative purpose) as follows:
box-shadow: 0 .5rem 1rem rgba(0, 0, 0, .15)!important;
- We can also use CSS properties through inline method.
Example 1: Below example illustrate how to make a Bootstrap 4 full width dropdown in Navbar using CSS properties.
- In Bootstrap 4, full width dropdown in Navbar might be possible by using Bootstrap 4 utilities.
- Similar to approach 1, focus on class dropdown and dropdown-menu only.
- Adding class position-static along with dropdown class, which is the parent class of dropdown-menu as follows:
"nav-item dropdown position-static"
- Now, add class w-100, mt-0 along with dropdown-menu class as follows:
"dropdown-menu mt-0 w-100 shadow border-outline-success"
Example 2: Below example illustrate how to make a Bootstrap 4 full width dropdown in Navbar using Bootstrap 4 utilities.
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