粘性定位相关理解
作者：互联网
粘性定位，之前为相对定位，top值不生效，当到达这个top值的时候才开始固定。
粘性定位top值之前
top值之后
<!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>
.before{
width: 100%;
height: 100vh;
background: red;
}
.a{
position: sticky;
top: 20px;
background:skyblue;
}
.after{
width: 100%;
height: 100vh;
background: purple;
}
.d{
width: 100%;
height: 100vh;
background: #f90;
}
.b{
position: sticky;
top: 120px;
background:skyblue;
}
</style>
</head>
<body>
<!-- <div class="container"> -->
<div class="before"></div>
<div class="a">111</div>
<div class="d"></div>
<div class="b">2222</div>
<div class="after"></div>
<!-- </div> -->
</body>
</html>
标签：定位,top,粘性,height,width,理解,background,100vh,100% 来源： https://blog.csdn.net/weixin_45638909/article/details/117842070