Don't compress font* and other

[Pahom-ka]

Don't compressed font* attributes. For example this: font-family:RobotoRegular,sans-serif;font-size:14px; length: 52 symbols compact equivalent: font:14px RobotoRegular,sans-serif; length: 35 symbols padding, margin, border similarly

yet maybe compress this: margin-bottom: 15px; length: 21 symbols to this margin: 0 0 15px; length: 18 symbols

I sew issue about unsafe optimization, but i think, that it's is safe optimization within the selector.

[lahmatiy]

That's definitely unsafe optimisations, since shorthands override other declarations e.g.:

.foo {
    margin: 10px;
}
.foo__selected {
    margin-top: 20px;
}

If these classes are applied to a single element (<div class="foo foo__selected">) and you replace margin-top -> margin, then you'll get margins 20px 0 0 instead of 20px 10px 10px...