body {
     background-color: black;
     color: white;
     font-family: Arial, sans-serif;
     margin: 0;
     padding: 0;
 }

 header {
     text-align: center;
     color: beige;
     padding: 20px;
 }

 ul,
 li {
     color: white
 }

 .center-container {
     display: flex;
     justify-content: center;
     /* Center horizontally */
 }