>>> continue

dist/styles/bootstrap-darkster.css

@@ -7048,6 +7048,7 @@ a:focus {
   width: inherit;
   height: inherit;
   border-radius: 3px;
+  border: 1px solid #6C757D;
 }
 .range-slider__knob {
   user-select: none;

dist/styles/bootstrap-default.css

@@ -7001,6 +7001,7 @@ a:focus {
   width: inherit;
   height: inherit;
   border-radius: 3px;
+  border: 1px solid #CED4DA;
 }
 .range-slider__knob {
   user-select: none;

dist/styles/bootstrap-greyson.css

@@ -6757,6 +6757,7 @@ a:focus {
   width: inherit;
   height: inherit;
   border-radius: 3px;
+  border: 1px solid #CED4DA;
 }
 .range-slider__knob {
   user-select: none;

dist/styles/bootstrap-herbie.css

@@ -7005,6 +7005,7 @@ a:focus {
   width: inherit;
   height: inherit;
   border-radius: 3px;
+  border: 1px solid #CED4DA;
 }
 .range-slider__knob {
   user-select: none;

dist/styles/bootstrap-monotony.css

@@ -7006,6 +7006,7 @@ a:focus {
   width: inherit;
   height: inherit;
   border-radius: 3px;
+  border: 1px solid #CED4DA;
 }
 .range-slider__knob {
   user-select: none;

src/sass/base/_range_slider.sass

@@ -47,6 +47,7 @@ $knob-size: 14px
     width: inherit
     height: inherit
     border-radius: $range-radius
+    border: 1px solid $range-border-color
 
   &__knob
     @include unselectable