html, body {
    margin: 0;
    padding: 0;
    overflow: hidden;
}

body {
    background-color: #000;
    color: #fff;
    font-family: 'Courier New', Courier, monospace;
    text-align: center;
}

canvas {
    display: block;
    background-color: #000;
}

#back-button {
    position: absolute;
    bottom: 10px;
    left: 10px;
    color: #fff;
    text-decoration: none;
    border: 1px solid #fff;
    padding: 10px 20px;
    border-radius: 5px;
    z-index: 20;
}

#back-button:hover {
    background-color: #fff;
    color: #000;
}

#message-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.8);
    padding: 20px;
    border-radius: 10px;
    border: 2px solid #fff;
    z-index: 10;
}

#restart-button {
    background-color: #fff;
    color: #000;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
}

#start-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
}

#start-button {
    font-size: 1.5em;
    padding: 15px 30px;
    cursor: pointer;
    background-color: #000;
    color: #fff;
    border: 2px solid #fff;
    border-radius: 10px;
}

#start-button:hover {
    background-color: #fff;
    color: #000;
}