.brth {
    width: 200px;
    height: 200px;
    overflow: hidden;
    position: relative;
}
.brth img {
    position: absolute;
    width: 1600px;
}

.brth-longevity img { left: -200px; top: -0px; }
.brth-health img { left: -400px; top: -0px; }
.brth-longevity.brth-health img { left: -600px; top: -0px; }
.brth-fertility img { left: -800px; top: -0px; }
.brth-longevity.brth-fertility img { left: -1000px; top: -0px; }
.brth-health.brth-fertility img { left: -1200px; top: -0px; }
.brth-longevity.brth-health.brth-fertility img { left: -1400px; top: -0px; }
.brth-efficiency img { left: -0px; top: -200px; }
.brth-longevity.brth-efficiency img { left: -200px; top: -200px; }
.brth-health.brth-efficiency img { left: -400px; top: -200px; }
.brth-longevity.brth-health.brth-efficiency img { left: -600px; top: -200px; }
.brth-fertility.brth-efficiency img { left: -800px; top: -200px; }
.brth-longevity.brth-fertility.brth-efficiency img { left: -1000px; top: -200px; }
.brth-health.brth-fertility.brth-efficiency img { left: -1200px; top: -200px; }
.brth-longevity.brth-health.brth-fertility.brth-efficiency img { left: -1400px; top: -200px; }
.brth-production img { left: -0px; top: -400px; }
.brth-longevity.brth-production img { left: -200px; top: -400px; }
.brth-health.brth-production img { left: -400px; top: -400px; }
.brth-longevity.brth-health.brth-production img { left: -600px; top: -400px; }
.brth-fertility.brth-production img { left: -800px; top: -400px; }
.brth-longevity.brth-fertility.brth-production img { left: -1000px; top: -400px; }
.brth-health.brth-fertility.brth-production img { left: -1200px; top: -400px; }
.brth-longevity.brth-health.brth-fertility.brth-production img { left: -1400px; top: -400px; }
.brth-efficiency.brth-production img { left: -0px; top: -600px; }
.brth-longevity.brth-efficiency.brth-production img { left: -200px; top: -600px; }
.brth-health.brth-efficiency.brth-production img { left: -400px; top: -600px; }
.brth-longevity.brth-health.brth-efficiency.brth-production img { left: -600px; top: -600px; }
.brth-fertility.brth-efficiency.brth-production img { left: -800px; top: -600px; }
.brth-longevity.brth-fertility.brth-efficiency.brth-production img { left: -1000px; top: -600px; }
.brth-health.brth-fertility.brth-efficiency.brth-production img { left: -1200px; top: -600px; }
.brth-longevity.brth-health.brth-fertility.brth-efficiency.brth-production img { left: -1400px; top: -600px; }