console 命令行工具 X clear
console
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            background: linear-gradient(135deg, #ffe6f2, #cce7ff);
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            font-family: '微软雅黑', sans-serif;
        }
        #countdown {
            font-size: 3vw;
            color: #2c3e50;
            text-align: center;
        }
        #message {
            display: none;
            background: rgba(255,255,255,0.9);
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 0 20px rgba(0,0,0,0.1);
            max-width: 400px;
            line-height: 1.6;
        }
        li {
            text-align: left;
            margin: 0.8rem 0;
        }
    </style>
</head>
<body>
    <div id="countdown"></div>
    <div id="message">
        <strong>恩琪：</strong><br>
        <span style="font-size:1.2em">15岁生日快乐！��</span><br><br>
        愿新的一岁：<br>
        <ul>
            <li>数学题永远解得开</li>
            <li>跑800米时风会推你一把</li>
            <li>冰淇凌永远不化在手心</li>
            <li>晚自习窗外的晚霞格外好看</li>
        </ul>
    </div>

    <script>
        const targetDate = new Date('2025-05-03T00:00:00');
        
        function updateTimer() {
            const now = new Date();
            const diff = targetDate - now;

            if (diff <= 0) {
                clearInterval(timer);
                document.getElementById('countdown').style.display = 'none';
                document.getElementById('message').style.display = 'block';
                return;
            }

            const days = Math.floor(diff / (1000 * 60 * 60 * 24));
            const hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
            const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));
            const seconds = Math.floor((diff % (1000 * 60)) / 1000);

            document.getElementById('countdown').innerHTML = `
                <div>${days} 天</div>
                <div>${hours.toString().padStart(2, '0')} : 
                ${minutes.toString().padStart(2, '0')} : 
                ${seconds.toString().padStart(2, '0')}</div>
                <div style="font-size:0.6em">距离特别时刻</div>
            `;
        }

        const timer = setInterval(updateTimer, 1000);
        updateTimer();
    </script>
</body>
</html>