<div class="bg">
  <img class="img-inset01" src="https://www.eyesofc.co.jp/webeyes/_demo/torarin/202104/sample.jpg" alt="サンプル画像">
</div>
.bg {
  width: 320px;
  background-color: #003366;
}
img {
  max-width: 320px;
  width: 100%;
}
.img-inset01 {
  clip-path: inset(20px);
}

External CSS

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External JavaScript

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