Tweak SCSS based on @AndersMad suggestions

src/Carousel/plugins/Dots/Dots.scss

@@ -1,15 +1,19 @@
 .has-dots {
-  margin-bottom: calc(#{$carousel-dots-margin} + #{$carousel-dots-height});
+  @if ($carousel-dots-margin > 0) {
+    margin-bottom: calc(#{$carousel-dots-margin} + #{$carousel-dots-height});
+  }
 }
 
 .carousel__dots {
   margin: 0 auto;
   padding: 0;
 
-  position: absolute;
-  top: calc(100% + #{$carousel-dots-margin});
-  left: 0;
-  right: 0;
+  @if ($carousel-dots-absolute) {
+    position: absolute;
+    top: calc(100% + #{$carousel-dots-margin});
+    left: 0;
+    right: 0;
+  }
 
   display: flex;
   justify-content: center;
@@ -33,7 +37,7 @@
       content: "";
       width: $carousel-dots-dot-width;
       height: $carousel-dots-dot-height;
-      border-radius: 50%;
+      border-radius: $carousel-dots-dot-radius;
 
       position: absolute;
       top: 50%;

src/Carousel/scss/_variables.scss

@@ -4,6 +4,7 @@ $carousel-slide-width: var(--carousel-slide-width, 60%) !default;
 /*
     Dots plugin
 */
+$carousel-dots-absolute: true !default;
 $carousel-dots-margin: 0.5rem !default;
 $carousel-dots-width: 22px !default;
 $carousel-dots-height: 22px !default;
@@ -12,6 +13,7 @@ $carousel-dots-dot-width: 8px !default;
 $carousel-dots-dot-height: 8px !default;
 $carousel-dots-dot-color: currentColor !default;
 $carousel-dots-dot-opacity: 0.25 !default;
+$carousel-dots-dot-radius: 50% !default;
 
 /*
     Navigation plugin

src/Carousel/scss/base.scss

@@ -33,7 +33,9 @@
 
 .#{$carousel-prefix}carousel__slide {
   flex: 0 0 auto;
-  width: $carousel-slide-width;
+  @if ($carousel-slide-width) {
+    width: $carousel-slide-width;
+  }
   max-width: 100%;
   padding: 1rem;
   position: relative;