JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box-container box-container--flex-column">
    <div class="box-wrap">
        <div class="box">
            <div class="box__image">
                <a href="#"><img src="http://lorempixel.com/207/153/" alt=""></a>
            </div>

            <div class="box__description">
                <div class="box__category">Testy</div>
                <div class="box__title"><a href="#">Velký test přenosných SSD</a></div>
            </div>
        </div>
    </div>

    <!-- box -->
    <div class="box-wrap box-wrap--big">
        <div class="box box--image_left">
            <div class="box__image">
                <a href="#"><img src="http://lorempixel.com/232/236/" alt=""></a>
            </div>

            <div class="box__description">
                <div class="box__category">Testy</div>
                <div class="box__title box__title--bold"><a href="#">Nový iPhone je opět skvělý a dražší</a></div>
                <div class="box__perex">Komplexní bezpečnostní balík, který pohání nejúspěšnější antivirový motor od Bitdefenderu.</div>
            </div>
        </div>
    </div>

    <!-- box -->
    <div class="box-wrap">
        <div class="box box--black">
            <div class="box__image">
                <div class="box__image__label">Plná verze</div>
                <a href="#"><img src="http://lorempixel.com/207/153/" alt=""></a>
            </div>

            <div class="box__description">
                <div class="box__category">Testy</div>
                <div class="box__title box__title--small"><a href="#">TrustPort TP 2015</a></div>
                <div class="box__perex">Komplexní bezpečnostní balík, který pohání nejúspěšnější antivirový motor od Bitdefenderu.</div>
            </div>
        </div>
    </div>
</div>

CSS

.box-container {
  margin: 0 -10px;
  margin-bottom: 20px;
  display: flex;
    display: -webkit-flex;
  -webkit-box-direction: normal;
  -moz-box-direction: normal;
  -webkit-box-orient: horizontal;
  -moz-box-orient: horizontal;
  -webkit-flex-direction: row;
  -ms-flex-direction: row;
  flex-direction: row;
  -webkit-flex-wrap: nowrap;
  -ms-flex-wrap: nowrap;
  flex-wrap: nowrap;
  -webkit-box-pack: center;
  -moz-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: stretch;
  -moz-box-align: stretch;
  -webkit-align-items: stretch;
  -ms-flex-align: stretch;
  align-items: stretch;
  -webkit-align-content: stretch;
  -ms-flex-line-pack: stretch;
  align-content: stretch;
}
.box-container:before,
.box-container:after {
  content: "";
  display: table;
}
.box-container:after {
  clear: both;
}
.lt-ie8 .box-container {
  zoom: 1;
}
.box-wrap {
  float: left;
  padding: 0 10px;
  width: 25%;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  display: -webkit-flex;
  display: flex;
  -webkit-flex-direction: column;
  flex-direction: column;
}
@media (max-width: 768px) {
  .box-wrap {
    width: 33.33333333%;
  }
}
.box-wrap.box-wrap--big {
  width: 50%;
}
@media (max-width: 768px) {
  .box-wrap.box-wrap--big {
    width: 33.33333333%;
  }
}
.box-wrap.box-wrap--medium {
  width: 33.33333333%;
}
.box {
  padding: 16px;
  height: 100%;
  background: #ffffff;
  -webkit-box-shadow: 0 0 4px rgba(0, 0, 0, 0.4);
  -moz-box-shadow: 0 0 4px rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.4);
    -webkit-flex: 1;
    flex: 1;
    
}
.box.box--image_left .box__category,
.box.box--image_right .box__category {
  margin-top: 0;
}
.box.box--image_left .box__description,
.box.box--image_right .box__description {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing:...