body { background-image:url("motherboard.gif");
    
}

.header {border-style:ridge; 
          border-color:#00ff00;
        display:flex;
          flex-direction:column;
          margin:auto;
          width:720px;
          height:100px;
          line-height:150%;
          background-color:black;
          
}

.midcontainer { background-color:black;
          border-style:ridge;
          border-color:lime;
          width:720px;
          margin-left:auto;
          margin-right:auto;
}

.text {color:white;

}

.first-border { margin-left:auto;
          margin-right:auto;
          
          
}

.zero {   width:200px;
          height:300px;
          border-color:purple;
          border-style:ridge;
}

.balls {padding-left:200px;
}