课后练习0901 | 码农工具

​x
 
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runcodex.com)</title>
<style>
  span{
    font:45px arial,sans-serif; 
  }
  button{
    width:100px;
    height:50px;
    background:red ;}
  }
</style>
<script>
</script>
​
  </head>
  
​
<body>
 <div>
  <span>请为下面的DIV设置样式:</span>
  <button>点击设置</button>
 </div>
</body>
​
</html>
HTML