automatically\n  &:empty {\n    display: none;\n  }\n}\n\n// Quick fix for badges in buttons\n.btn .badge {\n  position: relative;\n  top: -1px;\n}\n\n// Pill badges\n//\n// Make them extra rounded with a modifier to replace v3's badges.\n\n.badge-pill {\n  padding-right: $badge-pill-padding-x;\n  padding-left: $badge-pill-padding-x;\n  @include border-radius($badge-pill-border-radius);\n}\n\n// Colors\n//\n// Contextual variations (linked badges get darker on :hover).\n\n@each $color, $value in $theme-colors...