JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">

<div class="item">
    <!-- 200 x 191 -->
    <img src="http://bit.ly/1MtPeKu">
</div>
<div class="item">
    <!-- 1024 x 1024 -->
    <img src="http://bit.ly/1kwPEVo">
</div>
  <div class="item">
    <!-- 256 x 256 -->
    <img src="http://bit.ly/19rQjUf">
</div>
  <div class="item">
    <!-- 1786 x 1873 -->
    <img src="http://bit.ly/1JnjAiK">
</div>
  
</div>

CSS

img {
  border: 3px solid green;
  width: 100%;
}

.container {
  display: flex;
  justify-content: space-around;
}

.item {
  border: 1px solid red;
  flex-basis: 250px;
  max-width: 250px;
  min-width: 60px;
  margin: 10px;
}