The <img> element is able to fill an entire div while maintaining its original aspect ratio

I am currently facing a challenge with implementing a responsive gallery slider in Bootstrap. In order to achieve responsiveness, I need to use properties like max-height.

The issue arises from the fact that the images in the gallery can vary in size and aspect ratio.

In this scenario, the .carousel div has a height of 450px. To ensure that the gallery is responsive, I want to utilize max-height while also maintaining the integrity of the image ratios within the carousel. This means that some images may exceed the boundaries of the div, or conversely, not fill the entire space. In such cases, the images should be centered both vertically and horizontally (possibly using flexbox).

Applying max-height causes the carousel to resize dynamically based on the image dimensions, resulting in a jumpy user experience. On the other hand, setting a fixed height prevents jumping but compromises on responsiveness as smaller images may not fill the entire div.

Click here for an example

htmlcsstwitter-bootstrap

Answer №1

For maintaining your image ratio regardless of size, consider using object-fit: cover. This property acts like cropping the image to fit properly. To position your image in the center, you can also add object-position: center.

.carousel-inner > .item > img {
    object-fit: cover;
    object-position: center;
    // then your height and/or width
}

For more information, check out this link: https://developer.mozilla.org/en-US/docs/Web/CSS/object-fit

Answer №2

To optimize your website's performance, consider adding images as background images in your CSS instead of using the image tag in your markup. This can be done by either editing your CSS stylesheet directly or adding a style tag to the specific element. By specifying the background properties such as position and size in the .carousel .item class, you can achieve the desired visual effect without cluttering your HTML with image tags.

<div class="item active" style="background:url('path-to-image');"></div>

If you choose to include the background properties in your HTML markup, remember to use "!important" in your CSS declarations to prioritize these styles over others. For example:

Check out this updated demonstration on Fiddle Demo.

Your CSS code should resemble something like the following:

.carousel .item{
    width: 100%;
    height: 450px;
    overflow: hidden;
    background-position: center !important;
    background-size: cover !important;
}
.carousel .item:nth-of-type(1){
  background:url('image-url-1.jpg')
}
.carousel .item:nth-of-type(2){
  background:url('image-url-2.png')
}
.carousel .item:nth-of-type(3){
  background:url('image-url-3.jpg')
}

/* Additional styling for Indicators and Images */

.article-slide .carousel-indicators {
    // Styles for indicators list
}
.article-slide .carousel-indicators li {
    // Styles for indicator items
}
.article-slide .carousel-indicators img {
    // Styles for indicator images
}
.article-slide .carousel-indicators .active img {
    // Styles for active indicator image
}

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