Does resetting box-sizing do any harm in on iOS safari web?

Since I'm using this block of reset css:

html {
    box-sizing: border-box;
}
*, *:before, *:after {
    box-sizing: inherit;
}

I see constantly :before and :after blinking in the Safari web inspector, when scrolling or other rerendering events.

If so how can I still reset box-sizing for all elements in iOS Safari.