+
95
-

回答

运算符前后要有空格

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">

<style>
.box {
background: green;
height: calc(100vh - 140px);
width: calc(100% - 40px);

}
</style>
</head>
<body>
<div class="box">
1
</div>
</body>
</html>

网友回复

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