html {
    background-color: #000033;
}

body {
    margin: 0;
}

#moon {
    position: absolute;
    top:100px;
    right:100px;
    width:150px;
}

#firingButton {
    position: absolute;
    left:100px;
    bottom: 100px;
    width:75px;
    height:75px;
}

#firingButton img {
    width: 100%;
}

#firingButton.disabled img {
    filter:grayscale(100%);
    cursor: default;
}

#billboard {
    position: absolute;
    left:50px;
    top:100px;
    width: 314px;
    height: 200px;
    background-image: url('../img/billboard.png');
    background-size: auto 100%;
    background-repeat: no-repeat;
}

#billboard span {
    display: inline-block;
    width: 100px;
    height: 170px;
    position: absolute;
    right: 15px;
    top: 15px;
    
    font-size: 5rem;
    line-height: 170px;
    color: white;  
}

#rocket {
    position: absolute;
    bottom:0;
    width:200px;
    left: 50%;
    transform: translate(-50%);
    transition: bottom 15s ease, left 7s, transform 5s 0.5s;
}

#rocket.tookOff {
    bottom: 2000px;
    left: 75%;
    transform: rotate(45deg) scale(0.1);
}

.star {
    position: absolute;
    background-color: #fff;
    border-radius: 50%;
    z-index:-1;
}

.star.tiny {
    width: 1px;
    height: 1px;
}

.star.normal {
    width: 2px;
    height: 2px;
}

.star.big {
    width: 3px;
    height: 3px;
}