JSFiddle - React, Tailwind, and code Playground

HTML

<div class="gallery">
  <a href="">
    <img src="https://via.placeholder.com/300/300" alt="">
  </a>
  <a href="">
    <img src="https://via.placeholder.com/300/300" alt="">
  </a>
  <a href="">
    <img src="https://via.placeholder.com/300/300" alt="">
  </a>
  <a href="">
    <img src="https://via.placeholder.com/300/300" alt="">
  </a>
  <a href="">
    <img src="https://via.placeholder.com/300/300" alt="">
  </a>
  <a href="">
    <img src="https://via.placeholder.com/300/300" alt="">
  </a>
  <a href="">
    <img src="https://via.placeholder.com/300/300" alt="">
  </a>
</div>

CSS

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, max-content));
  grid-gap: 1rem;
}

a {
  max-width: 300px;
}

img {
  width: 100%;
}