*{
margin: 0;
padding: 0;
border: none;
font-size: 1.5625vw;
font-family:'Microsoft Yahei';
}
#music {
position: fixed;
top: 3vh;
right: 4vw;
z-index: 5;
width: 15vw;
height: 15vw;
border: 4px solid #ef1639;
border-radius: 50%;
background:#fff;
}
#musci>img:first-of-type{
position: absolute;
top: 24%;
right: 2.5%;
width: 28.421%;
}
#musci>img:last-of-type{
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
margin: auto;
width:79%;
}
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>慕课贺春</title>
<link rel="stylesheet" href="style.css" type ="text/css" />
</head>
<body>
<div id="music" >
<img src="image/music_pointer.png" >
<img src="image/music_disc.png" >
</div>
#musci>img:first-of-type写错了，应该是music