.myclass {
height:expression(this.height > 100 ? (this.width > this.height ? (this.height / this.width) * 100 : 100) : true);
}

Let me know if it works.

Is there a way to do this with max-height as the baseline?

I used to do the same thing: I’d repeat a recipe except I would change just one of the ingredients. Only I did it less with hops and more with the grains to see what flavor each type of grain imparts. I do miss brewing – I kept all the equipment in hopes that I would get back to it one day. It may be sooner than later – your enthusiasm is damned contagious! The next 2 weekends are definitely out – I have a project due the end of this month and I want to make sure I keep well ahead of the deadline (which probably means weekend work). But after Feb, I might just dust off the old brew kettle and give it a go! If I do, I’ll probably try an IPA.

The Hunter device was manufactured for use with room air conditioners, but brewers who used the device hooked it up to the fridge, not a room unit.

I put down an ordinary bitter this morning using Styrian Goldings and will try the same again in a fortnight with Fuggles to see the difference. After that I want to try out a porter or two and then perhaps I’ll look into lager.

Your mention of air-conditioning a room makes sense but you’d want really good insulation but even then the poor thing would have to work pretty hard. I’m happy with the fridge setup at the moment though I’ll need to invest in a heat pad when we come into winter I guess.

Not tempted to get back into it?

Luckily for brewers, the control was cheap (around $20), and most importantly, was capable of controlling temps down to 32F (0C), though I always wondered who would ever set their room temp to 32F!

I had an old fridge in the basement that I plugged into it. I set the control to 33F and put the sensor in the freezer side of the fridge. I did a couple of lagers that way. The lagers weren’t bad, but they never approached the quality of the ales (which I kept at around 60F). I never did figure out what I was doing wrong.