Improve Tailwind configuration

[maxpatiiuk]

• Reduce usages of arbitrary values (add to theme or standardize) (things like w-[1.5rem])
• https://tailwindcss.com/blog/tailwindcss-v3-1#style-native-dialog-backdrops
• Evaluate pros and cons of Don't use cursor: pointer for buttons by default tailwindlabs/tailwindcss#8962
• https://tailwindcss.com/blog/tailwindcss-v3-2#:~:text=%3C/div%3E-,ARIA%20attribute%20variants,-You%20can%20now
• Add max-w-... min-w-... to default tailwind config. so that you can do min-w-8 instead of min-w-[theme(spacing.8)]