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.tracking-activated,.tracking-activated:hover{background:#0074d9 url(img/GPS_on.png);background-size:cover;background-position:center center;background-repeat:no-repeat}.tracking-deactivated,.tracking-deactivated:hover{background-image:url(img/GPS_off.png);background-size:cover;background-position:center center;background-repeat:no-repeat}