body {
    margin: 0;
    background: #EEEEEE;
    font-family: Arial;
}

header {
    background: #333333;
    color: white;
    padding: 20px;
    text-align: center;
}

nav a {
    color: white;
    text-align: center;
    padding: 20px;
    text-decoration: none;
    font-size: 18px;
}


h1 {
    text-align: center;
}
 
 nav a:hover {
     background-color: #0096ff;
     color: black;
 }
 
 
 
.card {
    background-color: #ffffff;
    width: 900px;
    margin: 10px auto;
    padding: 15px;
    border-radius: 10px;
}