.stacks_in_41{height:500px}@media screen and (min-width:40em){.stacks_in_41{height:750px}}@media screen and (min-width:64em){.stacks_in_41{height:900px}}

.stacks_in_51{height:500px}@media screen and (min-width:40em){.stacks_in_51{height:750px}}@media screen and (min-width:64em){.stacks_in_51{height:900px}}

.stacks_in_43{height:500px}@media screen and (min-width:40em){.stacks_in_43{height:750px}}@media screen and (min-width:64em){.stacks_in_43{height:900px}}