Weather App project minimum design

Link here: WeatherApp
Is it okay if i just do the minimum job for now to handle the projects?
Should i spend much time worrying about design html + css?
My goal is to be really really good at JavaScript and get a job through that skill

The app works as it shoud. For me reports the right location and temp. You should only add the conversion function from C to F.

Oh yeah. i forgot about that part!