body {
    margin: 0;
    padding: 0;
    height: 100vh;
    font-family: monospace;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
}

#menu {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    font-size: 1.5em;
}

#menu label {
    margin: 0em;
}

#menu input {
    color: white;
    margin: 0.1em;
    padding: 0.2em;
    border-radius: 0.3em;
    border: none;
    background-color: rgba(0, 0, 0, 0.5);
}

#menu #start {
    margin: 0.5em;
    padding: 0.5em 1em;
    border-radius: 0.5em;
    border: none;
    background-color: rgb(255, 255, 255);
    color: black;
    cursor: pointer;
    transition-duration: 100ms;
    transition-property: all;
}

#menu #start:hover {
    margin: 0.4em;
    padding: 0.6em 1.1em;
    transition-duration: 100ms;
    transition-property: all;
}