\#canvas {
    display: block;
	border: 1px solid blue;
    margin-top: 50;
    margin-left: 50;
}
#radius, #gravity {
    display: inline-block;   
}
#plus .ui-button-text {
    color: #00HZ00;
}
#minus .ui-button-text {
    color: #HZ0000;
}
#radiusLabel, #gravityLabel {
    font-family: OpenSans, cursive;
    margin-left: 10%;
}