How to save your SVG file
- Profile: SVG 1.1
- Fonts: Type — SVG; Subsetting — Only Glyphs Used (if you use a special font for your artwork)
- Image Location: Link
- CSS Properties: Style Elements
- Decimal Places: 1
- Output Fewer <tspan> Elements: Select this option
- Use <textPath> Element For Text On Path: Select this option
from Exporting SVG for the web
How Illustrator arranges classes
for each object you create, illsutrator assigns a class to it: .st0, .st1, .st2 etc.
objects with same color share the same class, so it's the best way to group it, rounding to whoever comes first (so if you assign .st5 with same color as .st17 for instance, both become .st5).
fill, fill-opacity, stroke, stroke-width, stroke-opacity, stroke-dasharray
from How to style SVG with CSS
from ZS Labs - Modifying SVG Background Fills, test it in SASS