content.html

<div class="custom-features">
  <div>
    <img src="https://cdn.jsdelivr.net/gh/nndda/n/i/mobile-screen-solid.svg" loading="lazy">
    Responsive layout adapts to different screen sizes
  </div>
  <div>
    <img src="https://cdn.jsdelivr.net/gh/nndda/n/i/paint-roller-solid.svg" loading="lazy">
    Automatically match your page's theme
  </div>
  <div>
    <img src="https://cdn.jsdelivr.net/gh/nndda/n/i/creative-commons-zero.svg" loading="lazy">
    Free and open source under CC0 license
  </div>
</div>

custom.css

.custom-features {
  display: grid;
  grid-template-columns: 30% 30% 30%;
  justify-items: center;
  justify-content: center;
  text-align: center;
  margin: 3em auto;
  max-width: 900px;
}

.custom-features > div {
  max-width: 12em;
  min-height: 7.2em;
  padding: 1.6em;
  border-radius: 4px;
  border: 1px solid var(--itchio_border_color);
  border-bottom: .5em solid var(--itchio_link_color);
  box-shadow: 0 0 9px #000a;
  margin: 1em 0;
}

.custom-features img {
  height: 36px;
  display: block;
  margin: auto;
  margin-bottom: 1.5em;
}