
来源于GPT4o:代码来源
            
            
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          <!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>渐变色上半圆</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            background-color: #f0f0f0;
        }
        .half-circle {
            width: 200px;
            height: 100px;
            background: linear-gradient(to bottom, #ff7e5f, #feb47b); /* 渐变色从上到下 */
            border-top-left-radius: 100px;
            border-top-right-radius: 100px;
            /* 隐藏下半部分 */
            border-bottom-left-radius: 0;
            border-bottom-right-radius: 0;
        }
    </style>
</head>
<body>
    <div class="half-circle"></div>
</body>
</html>