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I have been reading about fixed div's within relative and absolute div's here:

Fix position of div with respect to another div

Fixed positioned div within a relative parent div

Fixed position but relative to container

And many other but none can help me to achive a behavior I have seen in few pages (blogs). I can not remember one at the moment, but here are some images to explain

View 1View 1 & View 2 View 2

After scrolling down, the contextual menu sticks to the side of the view and moves down with the scrolling until reach the end of the section in which it stops. If there is more content after it, you can keep scrolling down but the contextual menu no longer follow your view. The same going up, you reach the section, the contextual menu follows you up until the start of the section, then stops and you can keep scrolling up.

Is this posible with only HTML and CSS or do I need a plugin?

Here is a jsFiddle piece of code, perphaps incomplete. Forgot to mention, I'm doing this in Angular 6+ as a component, so I don't have full access to the index.html file with the body tag. The jsFiddle shows what I can work with.

Stephen P
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Giancarlo Benítez
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    Are you looking for `position: sticky` perhaps? Some reading: [CSS-Tricks article](https://css-tricks.com/position-sticky-2/), [Elad Shechter](https://medium.com/@elad/css-position-sticky-how-it-really-works-54cd01dc2d46). – chriskirknielsen Apr 28 '20 at 21:44
  • I have tried with `sticky`, no success thou. Thanks, I'll read it – Giancarlo Benítez Apr 28 '20 at 21:47
  • I don't understand how `position:fixed` didn't solve your problem, Can you provide a working code snippet with what you have tried. – Rainbow Apr 28 '20 at 21:48
  • some implementation with `fixed` either disappear the contextual menu or fixed to the whole window, not the section. – Giancarlo Benítez Apr 28 '20 at 21:50
  • Add your code here please. Without seeing it, you can use `position: sticky` on menu, however, you need to add `position: relative` to the `body` tag as well as the container your menu is in. – disinfor Apr 28 '20 at 22:12

1 Answers1

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There were a few things going on:

  1. You can set body { position: relative } in your CSS
  2. position: sticky needs a full height column to work. Because your col-6 that was holding your menu was only as tall as it needed to be, it won't scroll.
  3. I moved the p-sticky class to your column.
  4. sticky also needs a top value to know where the element should stick to once it becomes sticky.
.p-sticky {
  position: sticky;
  top: 60px;
}


body {
  position: relative;
}


/*some attemps*/

.p-relative {
  position: relative;
}

.p-absolute {
  position: absolute;
}

.p-sticky {
  position: sticky;
  top: 60px;
}

.p-fixed {
  position: fixed;
}


/* Standar CSS*/

.navbar {
  background-color: blue;
  width: 100%;
}

.nav-fixed {
  top: 0px;
  z-index: 1;
  position: fixed;
}

.content-ex1 {
  height: 200px;
  background-color: green;
}

.content-ex2 {
  height: 500px;
  background-color: #aaaaaa;
}

.menu {
  height: 50px;
  background-color: red;
}
<div class="navbar">
  some navbar things
</div>
<div class="navbar nav-fixed">
  some navbar things
</div>
<div class="content-ex1"> Some content here</div>
<div class="container">
  <div class="row">
    <div class="col-sm-6 p-sticky">
      <div class="menu">menu or something</div>
    </div>
    <div class="col-sm-6 content-ex2"> Some content here</div>
  </div>
</div>

<div class="content-ex1"> Some content here</div>

Here's the fiddle to play around with (which includes your bootstrap): http://jsfiddle.net/w4mz9dte/

Note: you appear to be using an old version of BootStrap. You may want to update to the newest version. In that case, only a few things will change - namely, you move the p-sticky class to the menu.

Here's the newest version of BS 4.4: http://jsfiddle.net/kamr0bjw/

body {
  position: relative;
}
/*some attemps*/
.p-relative{
  position:relative;
}
.p-absolute{
  position:absolute;
}
.p-sticky{
  position:sticky;
  top: 60px;
}
.p-fixed{
  position:fixed;
}


/* Standar CSS*/
.navbar{
  background-color: blue;
  width:100%;
}

.nav-fixed{
  top: 0px;
  z-index:1;
  position:fixed;
}
.content-ex1{
  height:200px;
  background-color: green;
}
.content-ex2{
  height:500px;
  background-color: #aaaaaa;
}
.menu{
  height:50px;
  background-color: red;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.0/jquery.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.4.0/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.4.0/js/bootstrap.min.js"></script>

<div class="navbar">
  some navbar things
</div>
<div class="navbar nav-fixed">
  some navbar things
</div>
<div class="content-ex1"> Some content here</div>
<div class="container">
  <div class="row">
    <div class="col-sm-6"> 
      <div class="menu p-sticky">menu or something</div>
    </div>
    <div class="col-sm-6 content-ex2"> Some content here</div>
  </div>
</div>

<div class="content-ex1"> Some content here</div>
disinfor
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