Sticky with overflow-auto remove gap

Question

I have this content with overflow-auto and inside a sticky on top and bottom. I want the sticky elements to be part of the content itself and don't have an extra space.

Because this is a simple example you can use a workaround of define the background-color with red, but I don't want that, it cannot be applied to my complex case.

Problem:

Ideal

.container {
  height: 200px;
  width: 200px;
  overflow: auto;
}

.content {
  height: 400px;
  width: 400px;
  background: red;
}

.stickie-top {
  position: -webkit-sticky;
  position: sticky;
  left: 0;
  top: 0;
}

.stickie-bottom {
  position: -webkit-sticky;
  position: sticky;
  bottom: 0;
  left: 0;
}

<div class="container">
  <div class="stickie-top">Sticky top</div>
  <div class="content">Lorem ipsum ...</div>
  <div class="stickie-bottom">Sticky bottom</div>
</div>

You can see the example in this: jsfiddle

Answer 1

Make their height equal to 0. For the bottom sticky you will need extra CSS to rectify the alignment

.container {
  height: 200px;
  width: 200px;
  overflow: auto;
}

.content {
  height: 400px;
  width: 400px;
  background: red;
}

.stickie-top {
  position: sticky;
  left: 0;
  top: 0;
  height:0;
}

.stickie-bottom {
  position: sticky;
  bottom: 0;
  left: 0;
  height:0;
  display:flex;
  align-items:flex-end;
}

<div class="container">
  <div class="stickie-top">Sticky top</div>
  <div class="content">Lorem ipsum ...</div>
  <div class="stickie-bottom">Sticky bottom</div>
</div>