<div class="card">
  <h1>这是我家的猫咪</h1>
  <img src="https://static.fedev.cn/sites/default/files/blogs/2020/2003/cat-632x475.jpg" alt="一只灰色的猫" width="632" height="475" />
  <p>一只杂毛猫，喵喵.....</p>
</div>

body {
  width: 100vw;
  min-height: 100vh;

  display: flex;
  align-items: center;
  justify-content: center;
}

.card {
  padding: 2vh;
  border: 1px solid #cecece;
  border-radius: 5px;
  box-shadow: 0 0 2px rgba(#000, 0.25);
  resize: horizontal;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  width: 280px;
}

img {
  max-width: 100%;
  height: auto;
}