/* Individually coloured cards */
 
#card1.correct 
{ 
    width: 50px;
    height: 50px;
    background: url("../images/dipstick.png") no-repeat center center;
    background-size: 70px 70px;
}
#card2.correct 
{ 
    width: 50px;
    height: 50px;
    background: url("../images/engine_symbol.png") no-repeat center center;
    background-size: 70px 70px;
}
#card3.correct 
{ 
    width: 50px;
    height: 50px;
    background: url("../images/battery.png") no-repeat center center;
    background-size: 70px 70px;
}

.slot1
/*Engine Symbol*/
{
    position: relative;
    top: 160px;
    left: 260px; 
}

.slot2
/*Battery*/
{
    position: relative;
    top: 160px;
    left: 450px;
}