#board{background-image:url(img/granite_size6.png);height:642px;margin:auto;position:relative;width:741px}.square{border-radius:50%}.disc,.square{height:54px;position:absolute;width:54px}.disc{background-image:url(img/resin_checkers_53px.png)}.disccolor_ff0000{background-position:-1px -1px}.disccolor_0000ff{background-position:-1px -221px}.possibleMove{background-color:green;cursor:pointer;filter:alpha(opacity=20);opacity:.16}