body {
    display: flex;
    flex-direction: column;
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    height: 100vh;
    overflow: hidden;
    background: lightblue;
}

#gameArea {
    width: 800px;
    height: 400px;
    border: 2px solid black;
    background-color: greenyellow;
}

#scoreBoard {
    font-size: 23px;
    color: black;
    margin: 10px 0;
}

#timer {
    font-size: 23px;
    color: black;
    margin: 5px 0;
}

#instructions {
    font-size: 23px;
    color: black;
    text-align: left;
    margin-bottom: 10px;
}

#container {
    background-color: greenyellow;
    border: 5px solid yellowgreen;
    height: 260px;
    width: 260px;
    margin: 0 auto;
    text-align: center;
    position: absolute;
    top: 150px;
    right: 15px;
}

#btn {
    margin: 50px auto;
    height: 65px;
    width: 65px;
    font-size: 14px;
    background-color: lightblue;
}

#output {
    margin: 15px auto;
    font-size: 16px;
    color: black;
}