lovecoding
/
W250913


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
            margin: 0;
        }
        .box{
            /* vw viewport width 是相对于视口的宽度 1vw = 1%视口宽度 */
            width: 100vw;
            /* vh viewport height 是相对于视口的高度 1vh = 1%视口高度 */
            height: 100vh;
            background-color: blue;
        }
        .box1{
            height: 100px;
            width: calc(100vw - 1000px);
            background-color: red;
        }
    </style>
</head>
<body>
    <!-- <div class="box"></div> -->
    <div class="box1"></div>
</body>
</html>