Matchheight extension for Yii2 do not work - yii2

Question

I am working on thumbnail gallery, which HTML code contains inside PHP foreach loop. But the problem is that thumbnails cards rendered with defferent height.
To prevent it i decided to use this extension
Here is my code:
<div class="container">
<?php foreach($data as $key => $value) {
if($counter == 0) {echo '<div class="row">';}
?>
<div class="col-sm-6 col-md-4 thumbnail_block">
<div class="thumbnail">
<div class="caption">
<h3><?php echo $value['strategy_title']; ?></h3>
<p><?php echo $value['strategy_description']; ?></p>
<p><button class="btn btn-info" type="button">
Узнать больше
</button></p>
</div>
</div>
</div>
<?php
if($counter == 2 || $key === $last_element) {echo '</div>'; $counter = 0;}
else {$counter++;}
}
?>
<?php $this->registerJs('$("thumbnail_block").matchHeight();') ?>
</div>
But nothing is working. What`s the problem and how can i solve it, or maybe i should try to find another way to make equal thumbnails heights?

Answer 1

After all i used CSS to make equal cards heights
/* CSS used here will be applied after bootstrap.css */
#media only screen and (min-width : 481px) {
.row.equal-height {
display: flex;
flex-wrap: wrap;
}
.row.equal-height > [class*='col-'] {
display: flex;
flex-direction: column;
}
.row.equal-height.row:after,
.row.equal-height.row:before {
display: flex;
}
.row.equal-height > [class*='col-'] > .thumbnail,
.row.equal-height > [class*='col-'] > .thumbnail > .caption {
display: flex;
flex: 1 0 auto;
flex-direction: column;
}
.row.equal-height > [class*='col-'] > .thumbnail > .caption > .flex-text {
flex-grow: 1;
}
.row.equal-height > [class*='col-'] > .thumbnail > img {
width: 100%;
height: 200px; /* force image's height */
/* force image fit inside it's "box" */
-webkit-object-fit: cover;
-moz-object-fit: cover;
-ms-object-fit: cover;
-o-object-fit: cover;
object-fit: cover;
}
}
In my yii build i use CDN to load styles, because of that site was always in the cache of browser. After i deleted cache everything started work. Now if i want to reload the whole site i press Shift+F5