Bootstrap 更改轮播高度

Question

I have a jsfiddle here - http://jsfiddle.net/gh4Lur4b/8/

It's a full width bootstrap carousel.

I'd like to change the height and still keep it full width.

Is the height determined by the image height.

How can I chanhe the height of the carousel and keep it 100% width.

.carousel-inner{
    // height: 300px;
}

.item, img{
    height: 100% !important;
    width:  100% !important;
    border: 1px solid red;
}

Answer 1

The following should work

.carousel .item {
  height: 300px;
}

.item img {
    position: absolute;
    top: 0;
    left: 0;
    min-height: 300px;
}

JSFille for reference.

Answer 2

You may also want to add

object-fit: cover;

To preserve the aspect ration for different window sizes

.carousel .item {
  height: 500px;
}

.item img {
    position: absolute;
    object-fit:cover;
    top: 0;
    left: 0;
    min-height: 500px;
}

For Bootstrap 4 and above replace .item with .carousel-item

.carousel .carousel-item {
  height: 500px;
}

.carousel-item img {
    position: absolute;
    object-fit: cover;
    top: 0;
    left: 0;
    min-height: 500px;
}

Answer 3

From Bootstrap 4

.carousel-item{
    height: 200px;
} 
.carousel-item img{
    height: 200px;
}

Answer 4

like Answers above, if you do bootstrap 4 just add few line of css to .carousel , carousel-inner ,carousel-item and img as follows

.carousel .carousel-inner{
height:500px
}
.carousel-inner .carousel-item img{
min-height:200px;
//prevent it from stretch in screen size < than 768px
object-fit:cover
}

@media(max-width:768px){
.carousel .carousel-inner{
//prevent it from adding a white space between carousel and container elements
height:auto
 }
}

Answer 5

if someone comes here looking exactly for what the headline points to, this will help (remember it's OK to use jQuery in Bootstrap v4):

$.fn.normalizeHeight = function () {
    $(this).css("height", Math.max.apply(null, $(this).children().map(function () {
        return $(this).height();
    })) + "px");

    return this;
};

It would simply be called with:

$("#slider .carousel-inner").normalizeHeight();

$(window).on('resize', function () {
  $("#slider .carousel-inner").normalizeHeight();
});

It is ES5 compliant + would work in other needed equal child height.

Answer 6

For Bootstrap 4

In the same line as image add height: 300px;

<img src="..." style="height: 300px;" class="d-block w-100" alt="image">

Answer 7

Try following it should work:

.carousel .carousel-item {
    max-height:550px;
}

.carousel-item img {
    object-fit:cover;
    max-height:550px;
}