body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

#app-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
}

header, footer {
    text-align: center;
}

header button {
    margin: 10px;
    padding: 10px 20px;
    font-size: 16px;
}

#game-board {
    display: grid;
    gap: 5px;
    margin: 20px 0;

    /* Disable Text Selection */
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.grid div {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    border: 1px solid #333;
    cursor: pointer;
}

.grid div.player {
    background-color: #4CAF50;
}

.grid div.zombie {
    background-color: #F44336;
}

.grid div.obstacle {
    background-color: #9E9E9E;
}

.grid div.item {
    background-color: #FFD700;
}

form {
    display: flex;
    flex-direction: column;

    justify-content: center;
    align-items: center;
}

fieldset {
    display: flex;
    flex-direction: column;

    justify-content: center;
    align-items: center;
}