JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container" style="padding-top: 20px; position: relative; padding-bottom: 20%; height: 0; overflow: hidden">
    <div class="flexslider" style="position: absolute; top: 0; left: 0; padding-top: 20px; padding-bottom: 20px; width: 100%; height: 100%">
        <ul class="slides">
            <li>
                <!-- Slide #1 -->
                <div class="row">
                    <div class="col-xs-offset-2 col-xs-3" style=""> <a href="#" class="thumbnail">
                                        <img src="img/bg-blur/IMG_8446.jpg">
                                        <div class="thumbtext"><h3>TEXT</h3></div>
                                    </a>

                    </div>
                    <div class="col-xs-5">
                        <div class="row">
                            <div class="col-xs-4"> <a href="#" class="thumbnail">
                                                <img src="img/bg-blur/IMG_8757.jpg">
                                                <div class="thmbtxt">Description</div>
                                            </a>

                            </div>
                            <div class="col-xs-4"> <a href="#" class="thumbnail">
                                                <img src="img/bg-blur/IMG_8848.jpg">
                                                <div class="thmbtxt">Description</div>
                                            </a>

                            </div>
                            <div class="col-xs-4"> <a href="#" class="thumbnail">
                                                <img src="img/bg-blur/IMG_8864k.jpg">
                                                <div class="thmbtxt">Description</div>
                                            </a>

                            </div>
                            <div class="col-xs-6"> <a href="#" class="thumbnail">
                                                <img src="img/bg-blur/noga.jpg">
                             ...

CSS

.thumbnail {
  overflow: hidden;
  padding: 0;
  height: 100%;
  max-height: 100%;
  width: auto;
}
.thumbnail a {
  position: relative;
}
.thumbnail:hover {
  opacity: 0.85;
  filter: alpha(opacity=85);
  -webkit-transform:scale(1.1); /* Safari and Chrome */
  -moz-transform:scale(1.1); /* Firefox */
  -ms-transform:scale(1.1); /* IE 9 */
  -o-transform:scale(1.1); /* Opera */
  transform: scale(1.1); /* Standard Syntax */
  -webkit-transition: all 0.4s ease-in-out; /* Safari and Chrome */
  -moz-transition: all 0.4s ease-in-out; /* Firefox */
  -ms-transition: all 0.4s ease-in-out; /* IE 9 */
  -o-transition: all 0.4s ease-in-out; /* Opera */
  transition: all 0.4s ease-in-out; /* Standard Syntax */
}
.thumbnail:hover img {
  opacity: 0.85;
  filter: alpha(opacity=85);
  -webkit-transform:scale(1.4); /* Safari and Chrome */
  -moz-transform:scale(1.4); /* Firefox */
  -ms-transform:scale(1.4); /* IE 9 */
  -o-transform:scale(1.4); /* Opera */
  transform: scale(1.4); /* Standard Syntax */
  -webkit-transition: all 0.4s ease-in-out; /* Safari and Chrome */
  -moz-transition: all 0.4s ease-in-out; /* Firefox */
  -ms-transition: all 0.4s ease-in-out; /* IE 9 */
  -o-transition: all 0.4s ease-in-out; /* Opera */
  transition: all 0.4s ease-in-out; /* Standard Syntax */
  -webkit-transition-delay: 100ms; /* Safari and Chrome */
  -moz-transition-delay: 100ms; /* Firefox */
  -ms-transition-delay: 100ms; /* IE 9 */
  -o-transition-delay: 100ms; /* Opera */
  transition-delay: 100ms; /* Standard Syntax */
}
.thumbtext:hover h3 {
  color: rgba(255,255,255,1);
  text-shadow: 0px 0px 8px rgba(0,0,0,1);
  -ms-transform: translateY(50%); /* IE 9 */
  -webkit-transform: translateY(50%); /* Chrome, Safari, Opera */
  transform: translateY(50%); /* Standard syntax */
  -webkit-transition: all 0.2s ease-in-out; /* Safari and Chrome */
  -moz-transition: all 0.2s ease-in-out; /* Firefox */
  -ms-transition: all 0.2s ease-in-out; /* IE 9 */
  -o-transition: all 0.2s...

JavaScript

$('.thumbnail').hover(function() {
        $(this).children('.thmbtxt').delay(400).slideToggle(200);
    }, function() {
        $(this).children('.thmbtxt').slideToggle(200);
    });