.camera-container {
    position: relative;
    display: inline-block;
}
.CameraBack {
    opacity: 0;
    position: fixed;
    bottom: 0;
    left: 0;
    transition: opacity o.3s ease;
}
.camera-container:hover .CameraBack{
    opacity: 1;
}
.camera-container:hover .CameraFront{
    opacity: 0;
}