JSFiddle - React, Tailwind, and code Playground

HTML

<div class="promotions">
  <div class="promotions-item">
      <div class="promotions-item-image-box">
      <img src="https://yandex.ru/images/today?size=1920x1080">
    </div>
  </div>
</div>

CSS

.promotions{
  width: 50%;
}
.promotions .promotions-item {
    border: 1px solid #eaeaea;
    border-radius: 3px;
    overflow: hidden; 
    margin-bottom: 20px;
    position: relative;
    background:red;
}
.promotions .promotions-item-image-box img {
    max-width: 100%; 
    max-height: 100%;
}