background: $color linear-gradient(180deg, mix($body-bg, darken($color, 7.5%), 15%), darken($color, 7.5%)) repeat-x !important;\n        border-color: darken($color, 10%);\n        color: darken(color-yiq($color), 7.5%);\n      }\n\n      &:not(:disabled):not(.disabled):active,\n      &:not(:disabled):not(.disabled).active,\n      &:active,\n      &.active {\n        background: $color linear-gradient(180deg, mix($body-bg, darken($color, 10%), 15%), darken($color, 10%)) repeat-x !important;\n        border-color:...