body{
    font-family: Arial, Helvetica, sans-serif;
    max-width: 800px;
    background-color: #f5f5f5;
    margin:0 auto;
    padding:20px;
}

header{
    color: #333;
    text-align: center;
}
section{
    background-color: white;
    padding:20px;
    margin-bottom: 20px;
    border-radius: 10px;

}
h2{
 color: #333;
 border-bottom:2px solid #ddd ;
 padding-bottom: 5px;   
}