Auto height increase on bootstrap carousel as token-input list increase - css

Question

I have a carousel which is actually a form.
One carousel item is a multi selectbox
How can i auto increase the height on only one carousel-item as the height of the multi select box increase.
The image 1 is how i get.
Image 2 how i want it.
Much thanks for much insights. I cannot refresh the carousel. It will unset my form inputs
<div class="row no-gutters" id="mob-carousel-row" [style.height.px]="mobileCarouselRowHeight">
<div class="col-1 col-sm-1">
<a href="#carouselExampleIndicators" role="button" data-slide="prev">
<i class="fa fa-angle-left mobile-form-nav" ></i>
</a>
</div>
<div class="col-10">
<div
#plMobileCarouselForm
id="carouselExampleIndicators"
class="carousel slide"
data-ride="carousel"
data-interval="false">
<div class="carousel-inner" role="listbox" id="mob-carousel">
<div class="carousel-item active">
<div class="form-group md-form mob inputbox">
<!-- first input box item -->
</div>
</div>
<div class="carousel-item active">
<div class="form-group md-form mob muti-select">
<!-- muti select box item need auto height -->
</div>
</div>
<div class="carousel-item active">
<div class="form-group md-form mob inputbox">
<!-- first input box item -->
</div>
</div>
</div>
</div>
</div>
<div class="col-1 col-sm-1">
<a href="#carouselExampleIndicators" role="button" data-slide="next">
<i class="fa fa-angle-right mobile-form-nav" ></i>
</a>
</div>
</div>

Answer 1

This is intended as a comment but I can't comment yet.
Since you haven't provided your CSS it's just guess work.
However, if you set the height to auto for the container that contains the input forms or select boxes, it will adjust itself as more options become available.
.carousel-item active {
height: auto;
}