#game-container {
    display: flex;
    justify-content: center; /* 가로 중앙 정렬 */
    align-items: flex-start; /* 세로 상단 정렬 */
    background-color: #008000;
    width: 100vw;
    height: 100vh;
    box-sizing: border-box;
}

#gameCanvas {
    background-color: #008000;
    border: 2px solid #fff;
    width: 95%;
    max-height: min(95vw, 95vh);
    box-sizing: border-box;
}