header { text-align: center; 
       color: white;}
body { background-image: linear-gradient(to bottom, #BF40BF, #FFA500);
    background-repeat: no-repeat;
    }
table { margin: auto;
       width: 90%;
       border: 3px solid black;
       border-collapse: collapse;
       font-size: 30px;
       font-family: Arial, sans-serif;
    
}
td, th { border: 2px solid black;
        padding: 3px;
        
}
td { text-align: center; }
tr:nth-of-type(even) { color: #E5E4E2;
    }

footer { text-align: center;
        font-style: italic;
        color: black;
        font-size: 1em;
}