body,
html {
    height: 100%;
    margin: 0;
}

.main {
    display: flex;
    justify-content: center;
    height: 100%;
}

.game {
    display: flex;
    width: 60%;
    height: 100%;
    justify-content: space-around;
    align-items: center;
}

.controls {
    display: flex;
    width: 100%;
    justify-content: center;
    align-items: center;
}