I have embedded a tall video in this bootstrap carousel.
The phone video on slide 2 is “not bootstrap-standard size” ie. is 4x5, so i used custom code:
class="vidbox embed-responsive embed-responsive-4by5"
/* Custom aspect ratio for 4x5 video / .embed-responsive-4by5 { padding-bottom: 125%; / 5/4 aspect ratio */ }
the video scaling works great, but it won’t accept a MAX HEIGHT e.g. 900px, or 90vh
Any ideas?
latest code below:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Multiple Responsive Slideshows</title>
<!-- Bootstrap CSS -->
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<style>
body {
background-color: violet;
margin: 10px; /* Reset margin to 0 */
padding: 0; /* Reset padding to 0 */
}
.container {
background-color: green;
margin-bottom: 50px;
padding: 10px;
display: flex;
justify-content: center;
align-items: center; }
.slideshow-container {
position: relative;
width: 100%;
margin: auto;
overflow: hidden;
background-color: #b9dbe5;
display: flex; /* Use flexbox layout */
justify-content: center; /* Center items horizontally */
align-items: center; /* Center items vertically */
}
.carousel-item {
text-align: center; /* Center images horizontally */
}
.slideshow-container img,
.slideshow-container iframe {
max-width: 100%;
max-height: 100%;
object-fit: contain;
}
/* Show arrows only on hover */
.slideshow-container:hover .prev,
.slideshow-container:hover .next {
display: block;
}
.prev, .next {
display: none;
cursor: default; /* Change cursor to default */
z-index: 1000;
color: silver;
font-weight: bold;
font-size: 30px;
position: absolute;
top: 50%;
transform: translateY(-50%);
width: auto;
padding: 16px;
border-radius: 0 3px 3px 0;
user-select: none;
text-decoration: none; /* Remove underline */
}
.prev:hover, .next:hover {
text-decoration: none; /* Remove underline */
color: silver; /* Change color on hover */
}
.prev {
left: 0;
}
.next {
right: 0;
border-radius: 3px 0 0 3px;
}
.prev.disabled, .next.disabled {
pointer-events: none;
opacity: 0.5;
}
/* //////// Media query //////// */
@media screen and (max-width: 650px) {
body {
background-color: goldenrod;
/* Videos and can be full width on mobile */
}
.carousel-item img {
width: 100% !important;
padding: 0 !important;
}
.carousel-item iframe {
width: 100% !important;
height: 100% !important;
padding: 0 !important;
}
.vidbox {
width: 100% !important;
height: 100% !important;
max-width: 100% !important;
max-height: 100% !important;
}
}
/* Custom aspect ratio for 4x5 video */
.embed-responsive-4by5 {
padding-bottom: 125%; /* 5/4 aspect ratio */
}
</style>
</head>
<body>
<div class="container" style="max-width: 1000px">
<div id="myCarousel1" class="slideshow-container carousel slide" data-ride="carousel" data-interval="false">
<!-- Image Slides -->
<div class="carousel-inner">
<div class="carousel-item active">
<img src="https://source.unsplash.com/random/1200x600/?kitten" style="padding: 30px;">
</div>
<!-- Video Slide -->
<div class="carousel-item">
<div style="max-height: 700px">
<div id="phone" class="vidbox embed-responsive embed-responsive-4by5" style="max-height: 700px; margin: auto; text-align: center;">
<iframe src="https://player.vimeo.com/video/912417077?badge=0&autopause=0&player_id=0&app_id=58479" frameborder="0" allow="autoplay; fullscreen; picture-in-picture" allowfullscreen style="padding: 0px"></iframe>
</div>
</div>
</div>
<!-- Video Slide -->
<div class="carousel-item">
<div id="nochill" class="vidbox embed-responsive embed-responsive-16by9" style="max-width: 800px; margin: auto; text-align: center;">
<iframe src="https://player.vimeo.com/video/143374377?h=760ef66606&title=0&byline=0&portrait=0" frameborder="0" allow="autoplay; fullscreen; picture-in-picture" allowfullscreen style="padding: 0px;"></iframe>
</div>
</div>
<!-- Navigation Arrows -->
<!-- Navigation Arrows -->
<a class="prev" href="#myCarousel1" data-slide="prev">❮</a>
<a class="next" href="#myCarousel1" data-slide="next">❯</a>
</div>
</div>
<!-- Bootstrap JS -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
<!-- Navigation Click anywhere to navigate -->
<script>
$(document).ready(function(){
$('.carousel-inner').on('click', function(e) {
if (e.pageX < $(this).width() / 2) {
$(this).closest('.carousel').carousel('prev');
} else {
$(this).closest('.carousel').carousel('next');
}
});
});
</script>
</body>
</html>Bootstrap v4 uses a legacy method to control aspect ratio, known as "the top-padding hack".
In short, applying a percentual vertical padding to a block-level element, the padding will be calculated based on width, not based on height. Before having aspect-ratio in CSS, this was a neat way to control aspect-ratio, among a few others. And it works cross-browser.
So what appears to be the height of the wrapper, is actually the top-padding. The content height is 0 (and it has to stay that way, for maintaining the aspect-ratio). But, because of this, max-height has no effect.
However, you can control the max-height by controlling max-width, since you already know the aspect-ratio.
In short:
/* max-height: 600px; */
max-width: 480px;
Upon closer inspection of the default bootstrap v4 aspect ratio implementation, it looks like there is a way to make max-height work on an element using the top padding hack, by adding a :before pseudo-element to it, with the same percentual vertical padding. In this case:
.embed-responsive-4by5::before {
padding-top: 125%;
}