body{
    font-family: Arial,sans-serif;
    margin: 0;
    padding: 0;
    color: white;
}
header{
    background-color: #333;
    color: whitesmoke;
    text-align: center;
    padding: 20px 0;
}
.container{
    display: flex;
    flex-direction: row;
    margin: 20px;
}
.left,.center-left,.center-right,.right{
    padding: 10px;
    flex: 1;
    margin: 5px;
}
.left ul,.right ul{
    margin-bottom: 10px;
}
a{
    text-decoration: none;
    color: whitesmoke;
}
a:hover{
    text-decoration: underline;
}
.Para{
    padding: 10px;
    text-align: center;