Scrollable Menu with Bootstrap - Menu expanding its container when it should not

Question

I tried this method (their fiddle) to enable scrollable menu with Bootstrap, but with that approach, the scrollable menu expands its container -- fiddle -- the non-scrollabl

Answer 1

I just fix this problem in my project-

CSS code

.scroll-menu{
   min-width: 220px;
   max-height: 90vh;
   overflow: auto;
 }

HTML code

<ul class="dropdown-menu scroll-menu" role="menu">
   <li><a href="#">Action</a></li>
   <li><a href="#">Another action</a></li>
   <li><a href="#">Something else here</a></li>
   <li><a href="#">Action</a></li>
   ..
   <li><a href="#">Action</a></li>
   <li><a href="#">Another action</a></li>
</ul>

Answer 2

You can use the built-in CSS class pre-scrollable in bootstrap 3 inside the span element of the dropdown and it works immediately without implementing custom css.

 <ul class="dropdown-menu pre-scrollable">
                <li>item 1 </li>
                <li>item 2 </li>

 </ul>

Answer 3

For CSS, I found that max height of 180 is better for mobile phones landscape 320 when showing browser chrome.

.scrollable-menu {
    height: auto;
    max-height: 180px;
    overflow-x: hidden;
}

Also, to add visible scrollbars, this CSS should do the trick:

.scrollable-menu::-webkit-scrollbar {
    -webkit-appearance: none;
    width: 4px;        
}    
.scrollable-menu::-webkit-scrollbar-thumb {
    border-radius: 3px;
    background-color: lightgray;
    -webkit-box-shadow: 0 0 1px rgba(255,255,255,.75);        
}

The changes are reflected here: https://www.bootply.com/BhkCKFEELL

Answer 4

Do everything in the inline of UL tag

<ul class="dropdown-menu scrollable-menu" role="menu" style="height: auto;max-height: 200px; overflow-x: hidden;">
                <li><a href="#">Action</a></li>
                <li><a href="#">Another action</a></li>
                <li><a href="#">Something else here</a></li>
                <li><a href="#">Action</a></li>
                ..
                <li><a href="#">Action</a></li>
                <li><a href="#">Another action</a></li>
            </ul>

Answer 5

I think you can simplify this by just adding the necessary CSS properties to your special scrollable menu class..

CSS:

.scrollable-menu {
    height: auto;
    max-height: 200px;
    overflow-x: hidden;
}

HTML

       <ul class="dropdown-menu scrollable-menu" role="menu">
          <li><a href="#">Action</a></li>
          <li><a href="#">Another action</a></li>
          <li><a href="#">Something else here</a></li>
          <li><a href="#">Action</a></li>
            ..
          <li><a href="#">Action</a></li>
          <li><a href="#">Another action</a></li>
       </ul>

Working example: https://www.bootply.com/86116

Bootstrap 4

Another example for Bootstrap 4 using flexbox

Answer 6

i hope this code is work well,try this.

add css file.

.scrollbar {
    height: auto;
    max-height: 180px;
    overflow-x: hidden;
}

HTML code:

<div class="col-sm-2  scrollable-menu" role="menu">
    <div>
   <ul>
  <li><a class="active" href="#home">Tutorials</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li><a href="#about">About</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li><a href="#about">About</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li><a href="#about">About</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li><a href="#about">About</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li><a href="#about">About</a></li>

    </ul>
   </div>
   </div>