我的五星红旗

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        div.container {
            width: 870px;
            height: 580px;
            margin: 0 auto;
            background-color: red;
            position: relative;
        }
        div.center {
            display: block;
            width: 0px;
            height: 0px;
            border-top: 64px solid yellow;
            border-left: 85px solid transparent;
            border-right: 85px solid transparent;
            position: absolute;
            left: 64px;
            top: 124px;
        }
        div.center::before,
        div.center::after {
            display: block;
            content: "";
            width: 0px;
            height: 0px;
            border-top: 64px solid yellow;
            border-left: 85px solid transparent;
            border-right: 85px solid transparent;
            position: absolute;
            left: -85px;
            top: -64px;
        }
        div.center::before {
            transform: rotate(-69deg);
        }
        div.center::after {
            transform: rotate(69deg);
        }
        div.right1 {
            transform: translate(130px, -80px) scale(0.2) rotate(30deg);
        }
        div.right2 {
            transform: translate(160px, -30px) scale(0.2) rotate(-30deg);
        }
        div.right3 {
            transform: translate(160px, 30px) scale(0.2) rotate(0deg);
        }
        div.right4 {
            transform: translate(130px, 80px) scale(0.2) rotate(30deg);
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="center">
        </div>
        <div class="center right1">
        </div>
        <div class="center right2">
        </div>
        <div class="center right3">
        </div>
        <div class="center right4">
        </div>
    </div>
</body>
</html>

不要太烂 2019-12-23

源自：CSS3转换 2-8 编程练习