// Override close button color and size inside alert .alert .btn-close { --#{$prefix}btn-close-size: .6875em; --#{$prefix}btn-close-opacity: .75; --#{$prefix}btn-close-hover-opacity: 1; padding: $alert-padding-y * 1.375 $alert-padding-x; } @each $color, $value in map-remove($theme-colors, "secondary", "dark", "light") { .alert-#{$color} .btn-close { --#{$prefix}btn-close-bg: #{escape-svg(url("data:image/svg+xml,"))}; filter: none; } }