* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;     
            background: linear-gradient(135deg, #667eea, #764ba2);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .container {
            background: white;
            border-radius: 10px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
            max-width: 600px;
            width: 100%;
            padding: 40px;
        }
        
        h1 {
            color: #333;
            margin-bottom: 30px;
            text-align: center;
            font-size: 2.5em;
            background: linear-gradient(135deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        ul {
            list-style: none;
        }
        
        li {
            background: #f5f5f5;
            margin: 10px 0;
            padding: 15px;
            border-radius: 5px;
            border-left: 4px solid #667eea;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        
        li:hover {
            background: #efefef;
            transform: translateX(5px);
            box-shadow: 0 2px 10px rgba(102, 126, 234, 0.2);
        }
        
        li::before {
            color: #667eea;
            font-weight: bold;
            margin-right: 10px;
        }