HTML部分:
<h1>
<a href="https://blog.net" alt=" Logo" title="首页">
CSDN
</a>
</h1>
CSS部分:
a {
display: inline-block;
width: 90px;
height: 44px;
background: url(https://csdnimg.cn/cdn/content-toolbar/csdn-logo_.png?v=20190924.1) no-repeat left top/94px 44px;
text-indent: -9999px;
overflow: hidden;
}