css怎么让图片上下居中显示

<code class="&lt;a style=\'color:#f60; text-decoration:underline;\' href=" https: target="_blank">css"&gt;.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

img {
  height: 100px;
}</code>