#ci81350:hover {
                            background-image: url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/good-density-measurement-block.jpg');
                            background-image:  linear-gradient(to bottom, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0,0.2) 100%),url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/good-density-measurement-block.jpg');
                        }

                        #ci81350 {
                            background-image: url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/good-density-measurement-block.jpg');
                            background-image:  linear-gradient(to bottom, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0,0.3) 100%),url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/good-density-measurement-block.jpg');
                            height:245px;
                        }
                    


                        #ci81351:hover {
                            background-image: url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-redefined-block.jpg');
                            background-image:  linear-gradient(to bottom, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0,0.2) 100%),url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-redefined-block.jpg');
                        }

                        #ci81351 {
                            background-image: url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-redefined-block.jpg');
                            background-image:  linear-gradient(to bottom, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0,0.3) 100%),url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-redefined-block.jpg');
                            height:245px;
                        }
                    


                        #ci81352:hover {
                            background-image: url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-measurement.jpg');
                            background-image:  linear-gradient(to bottom, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0,0.2) 100%),url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-measurement.jpg');
                        }

                        #ci81352 {
                            background-image: url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-measurement.jpg');
                            background-image:  linear-gradient(to bottom, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0,0.3) 100%),url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-measurement.jpg');
                            height:245px;
                        }
                    


                        #ci81353:hover {
                            background-image: url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-meters-group_360x245.jpg');
                            background-image:  linear-gradient(to bottom, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0,0.2) 100%),url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-meters-group_360x245.jpg');
                        }

                        #ci81353 {
                            background-image: url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-meters-group_360x245.jpg');
                            background-image:  linear-gradient(to bottom, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0,0.3) 100%),url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/density-meters-group_360x245.jpg');
                            height:245px;
                        }
                    


                        #ci81354:hover {
                            background-image: url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/css-density.jpg');
                            background-image:  linear-gradient(to bottom, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0,0.2) 100%),url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/css-density.jpg');
                        }

                        #ci81354 {
                            background-image: url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/css-density.jpg');
                            background-image:  linear-gradient(to bottom, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0,0.3) 100%),url('https://wiki.anton-paar.com/fileadmin/wiki/images/density/css-density.jpg');
                            height:245px;
                        }