css代码

img.bigger {
    width: 100%;
    height:100%;
    transition:transform 1s;
  }
img.bigger:hover{
    transform: scale(1.2,1.2);
  }

html代码

<div class="shoyecms">
<div class="cmsneiro">
<div class="cmstu" >
<a href="/"><img class="bigger" src="http://yanshi/content/uploadfile/202106/f19c1624517039.png"></a>
</div>
<div class="cmsbiaoti">
<p>测试测试测试</p>
</div>
<div class="cmszujian">
<span>作者</span>
<span>浏览</span>
</div>
</div>
</div>