diff --git a/.sass-lint.yml b/.sass-lint.yml
index 4cd148a..4fe35db 100644
--- a/.sass-lint.yml
+++ b/.sass-lint.yml
@@ -23,7 +23,7 @@ rules:
         - breakpoint
         - mq
   border-zero:
-    - none
+    - 2
     -
       convention: none
   no-warn: 1
@@ -31,24 +31,24 @@ rules:
   no-ids: 0
   no-important: 2
   hex-notation:
-    - 2
+    - 1
     -
       style: lowercase
   indentation:
     - 2
     -
       size: 2
-  property-sort-order:
+  no-qualifying-elements:
     - 1
     -
-      order:
-        - display
-        - margin
-      ignore-custom-properties: true
-  variable-for-property:
+      allow-element-with-attribute: true
+      allow-element-with-class: true
+      allow-element-with-id: true
+  no-selector-vendor-prefix:
     - 2
     -
-      properties:
-        - margin
-        - content
-
+      include: false
+  no-transition-all:
+    - 2
+    -
+      include: false
diff --git a/src/sass/mup.sass b/src/sass/mup.sass
index a06a917..03456dd 100644
--- a/src/sass/mup.sass
+++ b/src/sass/mup.sass
@@ -20,6 +20,7 @@ $slider-thumb-border-radius: 15px
   width: 100%
   margin: 0
   padding: 0
+
   &:focus,
   &:active
     outline: none
@@ -50,10 +51,12 @@ $slider-thumb-border-radius: 15px
   .mup-control
     display: inline-block
     color: $text-color-white
+
     &:not(:last-child)
       margin-right: 10px
 
-  .mup-progress-bar, .mup-progress-fill
+  .mup-progress-bar,
+  .mup-progress-fill
     margin: 0
     padding: 0
     border: none
@@ -82,6 +85,7 @@ $slider-thumb-border-radius: 15px
     font-size: 16px
     font-weight: bold
     transition: all 200ms ease-in-out
+
     &:hover
       background: lighten($control-background-light, 10%)
       color: $text-color-dark
@@ -95,6 +99,7 @@ $slider-thumb-border-radius: 15px
     padding: 0
     background: none
     border: none
+
     //# Chromium-based and Safari browser styles
     &::-webkit-slider-runnable-track
       width: 100%
@@ -106,6 +111,7 @@ $slider-thumb-border-radius: 15px
       border-radius: 25px
       border: none
       overflow: hidden
+
     &::-webkit-slider-thumb
       box-shadow: -100px 0 0 90px $main-color
       border: none
@@ -116,8 +122,10 @@ $slider-thumb-border-radius: 15px
       cursor: pointer
       -webkit-appearance: none
       margin-top: -2.4px
+
     &:focus::-webkit-slider-runnable-track
       background: $slider-track-color
+
     //# Mozilla browser styles for range
     &::-moz-range-track
       width: 100%
@@ -128,10 +136,12 @@ $slider-thumb-border-radius: 15px
       background: $slider-track-color
       border-radius: 25px
       border: none
+
     &::-moz-range-progress
       height: 100%
       background: $main-color
       border-radius: $slider-thumb-border-radius
+
     &::-moz-range-thumb
       box-shadow: 0 0 0 $shadow-color, 0 0 0 $shadow-color
       border: none
@@ -140,6 +150,7 @@ $slider-thumb-border-radius: 15px
       border-radius: $slider-thumb-border-radius
       background: $main-color
       cursor: pointer
+
     //# Microsoft browser styles for range
     &::-ms-track
       width: 100%
@@ -150,14 +161,17 @@ $slider-thumb-border-radius: 15px
       border-color: transparent
       border-width: 39px 0
       color: transparent
+
     &::-ms-fill-lower,
     &::-ms-fill-upper
       background: $slider-track-color
       border: none
       border-radius: 50px
       box-shadow: 0 0 0 $shadow-color, 0 0 0 $shadow-color
+
     &::-ms-fill-lower
       background: $slider-thumb-color
+
     &::-ms-thumb
       box-shadow: 0 0 0 $shadow-color, 0 0 0 $shadow-color
       border: none
@@ -166,6 +180,7 @@ $slider-thumb-border-radius: 15px
       border-radius: $slider-thumb-border-radius
       background: $main-color
       cursor: pointer
+
     &:focus
       &::-ms-fill-lower, &::-ms-fill-upper
         background: $main-color