思路:在正方形的一角(如:左上角),做一个圆形,然后做个给圆形做阴影盖住正方形的角,看上去就是圆角了
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
*{
margin: 0;
padding: 0;
}
body{
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}
.content{
position: relative;
width: 200px;
height: 200px;
background-color: red;
}
/* .content::before{
content: "";
position: absolute;
background-color: transparent;
width: 30px;
height: 30px;
border-radius: 50%;
box-shadow: -10px -10px 0 white;
} */
.radius{
position: absolute;
background-color: transparent;
width: 30px;
height: 30px;
border-radius: 50%;
box-shadow: -10px -10px 0 white;
}
</style>
</head>
<body>
<div class="content">
<div class="radius"></div>
</div>
</body>
</html