body {
    background: #f4f4f4;
    font-family: Arial, sans-serif;
    color: #333;
    text-align: center;
    margin: 0;
}
header {
    background: #0d3b94;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.logo {
    height: 60px;
}
.container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
.button {
    background: #1da8f5;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
.button:hover {
    background: #0d3b94;
}