class add or remove in j query

For Online paath download  file link below :-

<script type="text/javascript"  src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.js"></script>

HTML

<div class="container">

      <div class="area">
        <div class="thumbnail"> <img alt="100%x200" data-src="holder.js/100%x200" src="data:image/svg+xml;base64,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" data-holder-rendered="true" style="height: 200px; width: 100%; display: block;">
          <div class="caption">
            <h3>Thumbnail label</h3>
            <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
            <p><a href="#" class="btn btn-primary" role="button">Button</a> <a href="#" class="btn btn-default" role="button">Button</a></p>
          </div>
        </div>
      </div>

      <div class="area">
        <div class="thumbnail"> <img alt="100%x200" data-src="holder.js/100%x200" src="data:image/svg+xml;base64,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" data-holder-rendered="true" style="height: 200px; width: 100%; display: block;">
          <div class="caption">
            <h3>Thumbnail label</h3>
            <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
            <p><a href="#" class="btn btn-primary" role="button">Button</a> <a href="#" class="btn btn-default" role="button">Button</a></p>
          </div>
        </div>
      </div>


      <div class="area">
        <div class="thumbnail"> <img alt="100%x200" data-src="holder.js/100%x200" src="data:image/svg+xml;base64,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" data-holder-rendered="true" style="height: 200px; width: 100%; display: block;">
          <div class="caption">
            <h3>Thumbnail label</h3>
            <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
            <p><a href="#" class="btn btn-primary" role="button">Button</a> <a href="#" class="btn btn-default" role="button">Button</a></p>
          </div>
        </div>
      </div>

</div>

Css

.container {
    width: 1170px;
}
a{ text-decoration:none;}
.mrrt50{ margin-top:50px;}
.boder_red{ border:1px solid #C33;}

.area{ width:350px; float:left; margin-right:20px; margin-left:20px;}

.thumbnail {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    display: block;
    line-height: 1.42857;
    margin-bottom: 20px;
    padding: 4px;
    transition: border 0.2s ease-in-out 0s;
}
.thumbnail a > img, .thumbnail > img {
    margin-left: auto;
    margin-right: auto;
}
.thumbnail .caption {
    color: #333;
    padding: 9px;
}
.h3, h3 {
    font-size: 24px;
}
p {
    margin: 0 0 10px;
}

.btn {
    -moz-user-select: none;
    background-image: none;
    border: 1px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    display: inline-block;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.42857;
    margin-bottom: 0;
    padding: 6px 12px;
    text-align: center;
    touch-action: manipulation;
    vertical-align: middle;
    white-space: nowrap;
}
.btn-primary {
    background-color: #337ab7;
    border-color: #2e6da4;
    color: #fff;
}


.btn-default {
    background-color: #fff;
    border-color: #ccc;
    color: #333;
}

J.s

<script type="text/javascript">

$(document).ready(function(e) {
    $('.btn, .btn-primary').click(function(){
$(this).parents('.thumbnail').find('img').stop().addClass('boder_red') ;
$(this).parents('').siblings().find('img').removeClass('boder_red') ;

});
});
</script>