This chapter uses examples to introduce how to achieve fixed positioning in CSS. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
Set box2 to fixed positioning:
<!DOCTYPE html>
<html dir="ltr">
<head>
<meta charset="utf-8">
<title>定位</title>
<style media="screen">
.box1{
width:100px;
height: 100px;
background-color: rgb(184, 208, 162);
}
.box2{
width:100px;
height: 100px;
background-color: rgb(231, 223, 143);
position:fixed;
left: 100px;
top: 100px;
}
.box3{
width:100px;
height: 100px;
background-color: rgb(188, 211, 213);
}
span{
background-color: rgb(209, 198, 209);
}
</style>
</head>
<body>
<div>
<div>
</div>
<div>
<div>
</div>
</div>
<span>span元素</span>
</div>
</body>
</html>Output:
Fixed positioning will always be positioned relative to the browser window;
Fixed positioning will be fixed At a certain position in the browser window, it will not scroll with the scroll bar;
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