body {
    background-color: #000;
}
 
#container {
    width: 360px;
    margin: 0 auto 0 auto;
}
 
#canvas-outer {
    position: relative;
}
 
#start, #answer, #next {
    position: absolute;
    width: 200px;
    height: 60px;
    top: 400px;
    left: 80px;
    font-size: large;
    z-index: 1;
}
 
#answer, #next {
    display: none;
}