.minigame-block {
    display: block;
    margin: 0 auto;
}
.minigame-first {
    float: left;
    width: 50px;
    height: 50px;
}

.minigame-second {
    float: left;
    width: 50px;
    height: 50px;
}

.minigame-third {
    float: left;
    width: 50px;
    height: 50px;
}
.minigame-clear {
    clear: both;
}