body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #2c3e50, #4a6491);
            margin: 0;
            padding: 20px;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            color: #fff;
        }

        .container {
            text-align: center;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            backdrop-filter: blur(10px);
        }

        .chessboard {
            border-collapse: collapse;
            margin: 20px auto;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
            border: 5px solid #d7d6d6;
        }
       
        .chessboard th {
            text-align: center;
            font-size: 20px;
            position: relative;
            background-color: transparent;
            color: #f0d9b5;
            font-weight: bold;
            width: 30px;
        }
        .chessboard td {
            width: 60px;
            height: 60px;
            text-align: center;
            font-size: 40px;
            position: relative;
        }
 
        .rotation {
           
            transform: rotate(180deg);
            
        }
        .chessboard .file-notation th {
            height: 30px;
            font-size: 18px;
            color: #f0d9b5;
            
        }

        .white {
            background-color: #f0d9b5;
        }

        .black {
            background-color: #b58863;
        }

        /* Vita pjäser - vit färg */
        
        .white-piece {
            color: white;
            text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
        }

        /* Svarta pjäser - svart färg */
        
        .black-piece {
            color: black;
            text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.3);
        }

        .chessboard td:hover {
            background-color: rgba(214, 219, 225, 0.7);
            cursor: pointer;
        }