@mixin border-box-sizing {
@if not $theme-global-border-box-sizing { box-sizing: border-box; &::after, &::before, & *, & *::after, & *::before { box-sizing: inherit; } }
}
@mixin this-border-box-sizing {
@if not $theme-global-border-box-sizing { box-sizing: border-box; }
}