.board-composition-wrapper{max-width:900px;margin:40px auto;padding:20px;font-family:Arial,sans-serif;color:#222;background-color:#fff;box-sizing:border-box}.board-pdf-viewer{width:100%;height:600px;border:1px solid #ccc;margin-bottom:20px}.board-download-btn{display:inline-block;background-color:purple;color:#fff;font-weight:700;padding:12px 24px;border-radius:6px;text-decoration:none;font-size:16px;transition:background-color 0.3s ease}.board-download-btn:hover{background-color:#a020a0}@media (max-width:768px){.board-composition-wrapper{padding:15px}.board-pdf-viewer{height:500px}.board-download-btn{font-size:15px;padding:10px 20px}}@media (max-width:480px){.board-composition-wrapper{padding:10px}.board-pdf-viewer{height:400px}.board-download-btn{width:100%;text-align:center;font-size:14px;padding:10px;box-sizing:border-box}}