body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background: #f9f9f9;
}

header {
    background: #5075A9;
    color: #fff;
    padding: 20px 0;
    text-align: center;
    font-size: 2em;
    letter-spacing: 1px;
}

section {
    margin: 20px;
    padding: 20px;
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}