html, body{
    padding: 0;
    margin: 0;
    background: #E91E63;
}

.cube{
    display: block;
    width: 30px;
    height: 30px;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -15px;
    margin-left: -15px;
    background: #F8BBD0;
}

.none{
    display: none;
}

.cube-1:not(.bis), .cube-2:not(.bis){
    -webkit-transform: scale(0);
    -moz-transform: scale(0);
    -o-transform: scale(0);
    -ms-transform: scale(0);
    transform: scale(0);
}

.cube.bis{
    display: none;
}