#game-container {
    position: relative;
    width: 100vh;
    height: 0;
    padding-bottom: 75%; /* 4:3 aspect ratio */
    background-color: transparent;
    margin: auto;
    overflow: hidden;
    border: 2px solid black; /* Add border */
}

.pdf, .player, .projectile {
    position: absolute;
}
.pdf {
    width: 50px;
    height: 50px;
}
.player {
    width: 50px;
    height: 50px;
}
.projectile {
    background-color: black  !important;
    width: 5px;
    height: 10px;
}
#score, #level, #lives, #high-score {
    color: black;
    font-family: sans-serif;
    position: absolute;
    font-size: calc(14px + 0.25vw); /* Reduced font size */
}
#score {
    top: 10px;
    left: 10px;
}
#lives {
    top: 10px;
    left: calc(7vw); /* Adjusted position */
}
#high-score {
    top: 10px;
    left: calc(14vw); /* Adjusted position */
}
#level {
    top: 10px;
    right: 10px;
}