html, body {
    margin: 0px;
    padding: 0px;
}

body {
    overflow: hidden;
    -webkit-user-select: none;
}

.ui-content {
    background-size: 100%;
}

.gravity-background {
    background-image: url('../images/ballBackground.jpg');
}

.gravity-ball {
    content: url('../images/ball1.png');
}

.sky-background {
    background-image: url('../images/skyBackground.jpg');
}

.sky-ball {
    content: url('../images/balloon.png');
}

.space-background {
    background-image: url('../images/spaceBackground.jpg');
    background-color: #000;
    overflow: hidden;
}

.space-earth {
    content: url('../images/earth.png');
}

.space-sun {
    position: absolute;
    width: 86px;
    height: 86px;
    left: 0px;
    top: 0px;
    z-index: 50;
    content: url('../images/sun.png');
}

#ball {
    position: absolute;
    left: 0px;
    top: 0px;
}

#main {
    width: 100%;
    height: 100%;
}
