以前css无法做到实时显示网页屏幕的长度和宽度,但是css3通过@property 实现了,下面是完整的示例代码:
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum=1.0,minimum=1.0,user-scalable=0" />
<title>BFW NEW PAGE</title>
<style>
@property --vh {
syntax: '<length>';
inherits: true;
initial-value: 100vh;
}
@property --vw {
syntax: '<length>';
inherits: true;
initial-value: 100vw;
}
:root {
--w: tan(atan2(var(--vw),1px));
--h: tan(atan2(var(--vh),1px));
}
body::before {
content: counter(w) "x" counter(h);
counter-reset: w var(--w) h var(--h);
font-size: 150px;
font-weight: 900;
position: fixed;
inset: 0;
width: fit-content;
height: fit-content;
color: black;
background-color: white;
padding: 10px;
margin: auto;
}
</style>
</head>
<body>
</body>
</html>
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