body {
        font-family: Arial, sans-serif;
        max-width: 800px;
        margin: 50px auto;
        padding: 20px;
        background-color: #f5f5f5;
    }
    
    h1 {
        text-align: center;
        color: #333;
        margin-bottom: 40px;
    }
    
    .clickable {
        padding: 15px;
        margin: 20px 0;
        border: 2px solid #ddd;
        border-radius: 8px;
        cursor: pointer;
        transition: all 0.3s ease;
        background-color: white;
        font-size: 16pt;
        color: black;
    }
    
    .clickable.active {
        font-size: 48pt;
        color: white;
        background-color: #007acc;
    }
    
    .pressable {
        padding: 15px;
        margin: 20px 0;
        border: 2px solid #ddd;
        border-radius: 8px;
        background-color: white;
        transition: background-color 0.2s ease;
    }
    
    .hoverable {
        padding: 15px;
        margin: 20px 0;
        border: 2px solid #ddd;
        border-radius: 8px;
        background-color: #87ceeb; /* голубой */
        transition: background-color 0.3s ease;
    }
    
    .hoverable:hover {
        background-color: #ff6b6b; /* красный */
    }