body {
    background-color: #e7efef;
    color-scheme: light;
    color: rgb(52, 51, 51);
    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 20px;
    padding: 20px; 
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    text-align: center;
}
.subheader {
    font-size: 1.5em;
    color: #4a4a4a;
    margin-top: 10px;
}