Загрузка данных

<!DOCTYPE HTML>
<html lang="ru">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Моя первая страница</title>
    <style>
       
        html, body {
            margin: 0;
            padding: 0;
            height: 100%;
            font-family: sans-serif;
            text-align: center;
        }
        .top-half, .bottom-half {
            height: 50vh; 
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        .top-half {
            background-color: #e0f2fe; 
        } 
        .bottom-half {
            background-color: #007bff; 
            color: white; 
        }
        .blue-text {
            color: #007bff;
            font-size: 24px;
            font-weight: bold;
        }  
        .white-text {
            color: #ffffff;
            font-size: 24px;
            font-weight: bold;
        }
    </style>
</head>
<body>  
    <div class="top-half">
        <p class="blue-text">Привет</p>
    </div>
    <div class="bottom-half">
        <p class="white-text">Пока</p>
    </div>
</body>
</html>