Images Pulled in from JSON not displaying in a grid - css

Question

guys so I'm pulling in content from a JSON file to populate a grid of images. when the data loads it displays all the images in 1 column instead of in a grid. ideally, i would like a 4 wide image grid. All the CSS for this part of from default Bootstrap 4 values
HTML
<div id="UHD" ng-controller="Content-folders-4K">
<div id="UHD-frames" class="d-flex">
<div ng-repeat="friend in UHD" class="row">
<div id="img-frame" class="col-md-3 col-sm-6 col-xs-12">
<a href="/4k/{{friend.name}}.html">
<img alt="{{friend.name}}" src="assets/images/4k-thumbs/{{friend.name}}.jpg" class="img-fluid">
</a>
<p class="font-weight-bold text-center">{{friend.name}}</p>
</div>
</div>
</div>
</div>
Current result
Expected (simulated) result

Answer 1

I think You didn't wrap Your Grid with container and row class
Follow below example
<div class="container">
<div class="row">
<div class="col"> 1 of 2 </div>
<div class="col"> 2 of 2 </div>
</div>
</div>
**Wrap Your column div with container and row class **

Answer 2

You want to iterate the columns instead of the row...
<div id="UHD" ng-controller="Content-folders-4K">
<div id="UHD-frames" class="d-flex">
<div class="row">
<div class="col-md-3 col-sm-6 col-xs-12" ng-repeat="friend in UHD">
<a href="/4k/{{friend.name}}.html">
<img alt="{{friend.name}}" src="assets/images/4k-thumbs/{{friend.name}}.jpg" class="img-fluid">
</a>
<p class="font-weight-bold text-center">{{friend.name}}</p>
</div>
</div>
</div>
</div>

Answer 3

here's the code I used to get it to work.
<div id="UHD" ng-controller="Content-folders-4K" class="row">
<div ng-repeat="friend in UHD" class="col-lg-3 col-md-4 col-sm-6 col-xs-12">
<a href="{{friend.link}}">
<div id="tiles" class="tiles">
<img src="thumbs/111/{{friend.name}}.png" alt="" />
</a>
<p class="text-center">{{friend.name}}</p>
</div>
</div>
</div>