Bootstrap Panel Collapse

Introduction

Frequently we need to segregate several small (or not so much) pieces of information to help them stand up and get the guest's focus-- like providing certain helpful features presenting a listing of posts along with a short extract and a single strong picture and so on and on.

So we want a practical solution to beautifully wrap our information in a lovely and responsive manner to get it nice and neat presented on our web pages. In the recent version of the most famous flexible framework-- Bootstrap 3 we used mostly the Bootstrap Panel Tabs, thumbnail and well elements delivering us box containers with a subtle border, quite rounded edges and eventually-- a slight 3d impact. In the latest Bootstrap 4 framework, these are no more. They get got upgraded collectively by the card part claiming to be worthy of virtually everything the ancestors might do but simply improved. It's the right moment to get to learn it more.

Strategies to add the Bootstrap Panel Group:

The cards are delicately styled boxes capable of carrying practically any HTML content inside as well having a lot of predefined styling choice for properly showcasing its article. It also optionally could have a header and a footer.

In order to generate a card we initially require a .card item to wrap the whole thing up. Inside it separate wrappers for the header .card-header, the genuine card content .card-block and the footer .card-footer should take place and while the header and footer are quite optional and could be left out if you don't want them the .card-block is the vital part-- it nicely wraps your content supplying some slight padding near.

Inside the .card-block section you could have a caption carrying the class .card-title which can be assigned to theh1-- h6 sections as well as to a standard <div> and fo course -- come text wrapped in a paragraph with the .card-text class. If you choose to add some web links as well-- assign them the .card-link class to have them correctly differentiated for better user interaction.

The contextual colour classes are employed to additionally style your whole card sections quickly-- simply assign a .card- ~ one of the contextual colours here like primary, success, info or danger here ~ to the primary .card wrapper and if the background becomes a bit overly dim for the text to be legible enough-- additionally add the .card-inverse class to alter the text color. You can also style only the border color scheme using the contextual scheme-- this gets done by assigning the .card-outline- ~ the required colour ~ class again to the primary .card element.

As discussed above the .card-block arrives to cover the content keeping a pretty padding around it. However when it involves pictures this might intend to avoid this and get the image expanded the whole width of the element.

To have this look simply place the <div class="img"><img></div> tag outside the .card-block so you avoid the paddings eventually adding style=" width:100%;" making certain it is going to resize properly always filling in its container.

Here are multiple rather useful placement classes additionally such as .card-img-top and .card-img-bottom adjusting the pic at the top or the bottom of the card. And if you need to position it somewhere in between the text just break the .card-block, insert the picture and start a new .card-block to insert the information you need placed after the pic-- multiple card blocks are supported. Eventually you can also desire to add some content on top of the image-- cover it inside a <div> having the .img-overlay class.

A few words about the design-- cards will occupy the complete horizontal area available by default thus it's a great idea restricting it by putting them inside some grid elements. By doing this you can obtain their predictable behavior.

Some instance

Cards are designed with as little markup and styles as possible, but still operate to offer a plenty of management and customization. Built with flexbox, they provide easy alignment and combine properly with other Bootstrap components.

Beneath is a model of a standard card with combined content and a set width. Cards have no predetermined width to start, so they'll typically occupy the whole width of its parent element. This is quickly modified with a variety of sizing alternatives.

 For example
<div class="card" style="width: 20rem;">
  <div class="img"><img class="card-img-top" src="..." alt="Card picture caption"></div>
  <div class="card-block">
    <h4 class="card-title">Card caption</h4>
    <p class="card-text">Some fast sample message to build on the card title as well as compose the bulk of the card's material.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

Web-site subject kinds

Cards maintain a broad assortment of content, featuring images, text, list collections, links, and more. Listed below are samples of what's maintained.

Blocks

The building block of a card is the .card-block. Use it whenever you require a padded area within a card.

Blocks
<div class="card">
  <div class="card-block">
    This is some message in a card block.
  </div>
</div>

Names, information, and hyperlinks

Card titles are used by including .card-title to a <h*> tag. In the same way, urls are added and placed next to each other by adding .card-link to a <a> tag.

 Names, text, and {links| web links| hyperlinks| urls
<div class="card">
  <div class="card-block">
    <h4 class="card-title">Card title</h4>
    <h6 class="card-subtitle mb-2 text-muted">Card subtitle</h6>
    <p class="card-text">Some fast example message to improve the card title and compose the mass of the card's content.</p>
    <a href="#" class="card-link">Card link</a>
    <a href="#" class="card-link">Another link</a>
  </div>
</div>

Illustrations

.card-img-top spots a pic to the head of the card. With .card-text, text is added to the card. Text in .card-text can also be styled with the standard HTML tags.

 Pics
<div class="card">
  <div class="img"><img class="card-img-top" src="..." alt="Card picture cap"></div>
  <div class="card-block">
    <p class="card-text">Some fast example message to build on the card title and also compose the bulk of the card's web content.</p>
  </div>
</div>

Selection groups

Create lists of content in a card along with a flush list group.

Selection groups
<div class="card">
  <ul class="list-group list-group-flush">
    <li class="list-group-item">Cras justo odio</li>
    <li class="list-group-item">Dapibus ac facilisis in</li>
    <li class="list-group-item">Vestibulum at eros</li>
  </ul>
</div>

Merge up and fit several information kinds to generate the card you like, or toss everything in there. Revealed right here are picture styles, blocks, notification looks, plus a list group - all wrapped in a fixed-width card.

Image cap
<div class="card" style="width: 20rem;">
  <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
  <div class="card-block">
    <h4 class="card-title">Card title</h4>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
  <ul class="list-group list-group-flush">
    <li class="list-group-item">Cras justo odio</li>
    <li class="list-group-item">Dapibus ac facilisis in</li>
    <li class="list-group-item">Vestibulum at eros</li>
  </ul>
  <div class="card-block">
    <a href="#" class="card-link">Card link</a>
    <a href="#" class="card-link">Another link</a>
  </div>
</div>

Header and footer

Include an extra header and/or footer inside a card.

Header and footer
<div class="card">
  <div class="card-header">
    Featured
  </div>
  <div class="card-block">
    <h4 class="card-title">Unique title therapy</h4>
    <p class="card-text">With supporting message below as an all-natural lead-in to extra content.</p>
    <a href="#" class="btn btn-primary">Go someplace</a>
  </div>
</div>

Card headers could be styled by including .card-header to <h*> sections.

Header and footer
<div class="card">
  <h3 class="card-header">Featured</h3>
  <div class="card-block">
    <h4 class="card-title">Special title treatment</h4>
    <p class="card-text">With supporting message below as a natural lead-in to extra content.</p>
    <a href="#" class="btn btn-primary">Go someplace</a>
  </div>
</div>
Header
<div class="card">
  <div class="card-header">
    Quote
  </div>
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
Header and footer
<div class="card text-center">
  <div class="card-header">
    Featured
  </div>
  <div class="card-block">
    <h4 class="card-title">Special title treatment</h4>
    <p class="card-text">With supporting text below as an all-natural lead-in to extra material.</p>
    <a href="#" class="btn btn-primary">Go someplace</a>
  </div>
  <div class="card-footer text-muted">
    2 days ago
  </div>
</div>

Proportions

Cards have no precise width to begin, so they'll be 100% wide unless otherwise mentioned. You can alter this as required with customized CSS, grid classes, grid Sass mixins, or utilities.

Employing grid markup

Making use of the grid, wrap cards in columns and rows as wanted.

 Working with grid markup
<div class="row">
  <div class="col-sm-6">
    <div class="card">
      <div class="card-block">
        <h3 class="card-title">Special title treatment</h3>
        <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
        <a href="#" class="btn btn-primary">Go somewhere</a>
      </div>
    </div>
  </div>
  <div class="col-sm-6">
    <div class="card">
      <div class="card-block">
        <h3 class="card-title">Special title treatment</h3>
        <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
        <a href="#" class="btn btn-primary">Go somewhere</a>
      </div>
    </div>
  </div>
</div>

Making use of utilities

Use handful of offered sizing utilities to swiftly establish a card's size.

Utilizing utilities
<div class="card w-75">
  <div class="card-block">
    <h3 class="card-title">Card title</h3>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Button</a>
  </div>
</div>

<div class="card w-50">
  <div class="card-block">
    <h3 class="card-title">Card title</h3>
    <p class="card-text">With sustaining message listed below as an all-natural lead-in to extra web content.</p>
    <a href="#" class="btn btn-primary">Button</a>
  </div>
</div>
Making use of utilities
<div class="card" style="width: 20rem;">
  <div class="card-block">
    <h3 class="card-title">Special title treatment</h3>
    <p class="card-text">With supporting text below as a natural lead-in to added material.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

Message positioning

You can promptly change the message placement of any kind of card-- in its entirety or certain parts-- with text align classes.

Text placement
<div class="card" style="width: 20rem;">
  <div class="card-block">
    <h4 class="card-title">Special title treatment</h4>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

<div class="card text-center" style="width: 20rem;">
  <div class="card-block">
    <h4 class="card-title">Special title treatment</h4>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

<div class="card text-right" style="width: 20rem;">
  <div class="card-block">
    <h4 class="card-title">Special title treatment</h4>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

Web-site navigating

Include some navigation to a card's header (or block) with Bootstrap's nav elements.

Navigation
<div class="card text-center">
  <div class="card-header">
    <ul class="nav nav-tabs card-header-tabs">
      <li class="nav-item">
        <a class="nav-link active" href="#">Active</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#">Disabled</a>
      </li>
    </ul>
  </div>
  <div class="card-block">
    <h4 class="card-title">Special title treatment</h4>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>
Navigation
<div class="card text-center">
  <div class="card-header">
    <ul class="nav nav-pills card-header-pills">
      <li class="nav-item">
        <a class="nav-link active" href="#">Active</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#">Disabled</a>
      </li>
    </ul>
  </div>
  <div class="card-block">
    <h4 class="card-title">Special title treatment</h4>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

Images

Cards involve some features for operating using pics. Pick from appending "image caps" at either end of a card, covering images with card content, or just embedding the image in a card.

Illustration caps

Just like headers and footers, cards can involve top and bottom "image caps"-- images at the top or bottom of a card.

 Pic caps
<div class="card mb-3">
  <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
  <div class="card-block">
    <h4 class="card-title">Card title</h4>
    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
  </div>
</div>
<div class="card">
  <div class="card-block">
    <h4 class="card-title">Card title</h4>
    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
  </div>
  <div class="img"><img class="card-img-bottom" src="..." alt="Card image cap"></div>
</div>

Picture cover

Turn an image into a card foundation and overlay your card's text. Depending on the pic, you may or may not need .card-inverse (see below).

 Illustration overlays
<div class="card card-inverse">
  <div class="img"><img class="card-img" src="..." alt="Card image"></div>
  <div class="card-img-overlay">
    <h4 class="card-title">Card title</h4>
    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
  </div>
</div>

Card selections

Cards feature different options for customizing their backgrounds, borders, and color.

Inverted text

By default, cards use dark text and expect a light background. You can change that by toggling the color scheme of text within, in addition to that of the card's subcomponents, with .card-inverse. After that, specify a dark background-color and border-color to go with it.

You can additionally use .card-inverse having the contextual backgrounds variants.

Inverted text
<div class="card card-inverse" style="background-color: #333; border-color: #333;">
  <div class="card-block">
    <h3 class="card-title">Special title treatment</h3>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

Background alternatives

Cards include their own variant classes for swiftly modifying the background-color and border-color of a card. Darker colors require the use of .card-inverse.

Background variations
<div class="card card-inverse card-primary mb-3 text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
<div class="card card-inverse card-success mb-3 text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
<div class="card card-inverse card-info mb-3 text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
<div class="card card-inverse card-warning mb-3 text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
<div class="card card-inverse card-danger text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>

Revealing meaning to assistive modern technologies

Employing color to include meaning only delivers a visual indication, that will not be shared to users of assistive technologies-- like screen readers. Ensure that information signified by the color is either evident from the content itself (e.g. the visible text), or is involved through different means, including extra content hidden with the .sr-only class.

Outline cards

In need of a colored card, but not the significant background colors they deliver? Change the default modifier classes with the .card-outline-* ones to style just the border-color of a card.

Outline cards
<div class="card card-outline-primary mb-3 text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
<div class="card card-outline-secondary mb-3 text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
<div class="card card-outline-success mb-3 text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
<div class="card card-outline-info mb-3 text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
<div class="card card-outline-warning mb-3 text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
<div class="card card-outline-danger text-center">
  <div class="card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>

Card placement

In addition to styling the content within cards, Bootstrap 4 adds several options for laying out collection of cards. For the present being, these format options are not yet responsive.

Card groups

Utilize card groups to make cards as a single, attached element with identical width and height columns. Card groups utilize display: flex; to achieve their uniform sizing.

Card groups
<div class="card-group">
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
</div>

When employing card groups with footers, their content should automatically line up.

Card groups
<div class="card-group">
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
</div>

Card decks

Need a collection of equivalent width and also height cards that typically aren't affixed to one another? Utilize card decks.

Card decks
<div class="card-deck">
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
</div>

Just like with card groups, card footers in decks should automatically line up.

Card decks
<div class="card-deck">
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
  <div class="card">
    <div class="img"><img class="card-img-top" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
</div>

Card columns

Cards are ordered from top to bottom and left to.

Carry on! Your mileage with card columns may vary. To avoid cards breaking across columns, set them to display: inline-block as column-break-inside: avoid isn't a bulletproof solution yet.

Card columns
<div class="card-columns">
  <div class="card">
    <div class="img"><img class="card-img-top img-fluid" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title that wraps to a new line</h4>
      <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    </div>
  </div>
  <div class="card p-3">
    <blockquote class="card-block card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>
        <small class="text-muted">
          Someone famous in <cite title="Source Title">Source Title</cite>
        </small>
      </footer>
    </blockquote>
  </div>
  <div class="card">
    <div class="img"><img class="card-img-top img-fluid" src="..." alt="Card image cap"></div>
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card card-inverse card-primary p-3 text-center">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat.</p>
      <footer>
        <small>
          Someone famous in <cite title="Source Title">Source Title</cite>
        </small>
      </footer>
    </blockquote>
  </div>
  <div class="card text-center">
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <div class="img"><img class="card-img img-fluid" src="..." alt="Card image"></div>
  </div>
  <div class="card p-3 text-right">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>
        <small class="text-muted">
          Someone famous in <cite title="Source Title">Source Title</cite>
        </small>
      </footer>
    </blockquote>
  </div>
  <div class="card">
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
</div>

Card columns can additionally be expanded and also personalized with some extra code. Revealed below is an extension of the .card-columns class using the same CSS-- CSS columns-- to create a collection of receptive tiers for altering the number of columns.

.card-columns 
  @include media-breakpoint-only(lg) 
    column-count: 4;
  
  @include media-breakpoint-only(xl) 
    column-count: 5;

Conclusions

Generally this is the way the new to Bootstrap 4 card element becomes easily set up. As always aiming for ease and simplicity the new framework version integrates the performance of a few elements into a singular and powerful one. Right now you need to pick up the components you need to be outlined in some cards.

Look at a couple of youtube video short training relating to Bootstrap Panel Body:

Connected topics:

Bootstrap Panel-Cards: official information

Bootstrap Panel-Cards:  authoritative  records

Insights on how can we form Bootstrap 4 cards just the exact same tallness?

Insights on  just how can we  build Bootstrap 4 cards just the same  height?

Having need of past panel look for cards

 Wanting past panel look for cards